
This glossary of BDSM terms defines terms commonly used in the BDSM community.

The following outline is provided as an overview of and topical guide to BDSM:

Algolagnia is a sexual tendency which is defined by deriving sexual pleasure and stimulation from physical pain, often involving an erogenous zone. Studies conducted indicate differences in how the brains of those with algolagnia interpret nerve input.

A bondage cover, as opposed to a bondage magazine, was a general-interest magazine that featured bondage imagery on its cover, usually an image of a bound and gagged woman.

Bondage is the activity of tying or restraining people using equipment such as chains, cuffs, or collars for mutual erotic pleasure. According to the Kinsey Institute, 12% of females and 22% of males respond erotically to BDSM.

Consent within BDSM is when a participant gives their permission for certain acts or types of relationships. It bears much in common with the concept of informed consent and is simultaneously a personal, ethical and social issue. It is an issue that attracts much attention within BDSM, resulting in competing models of consent such as Safe, sane and consensual and Risk-aware consensual kink. Observers from outside the BDSM community have also commented on the issue of consent in BDSM, sometimes referring to legal consent which is a separate and largely unrelated matter. However, the presence of explicit consent within BDSM can often have implications for BDSM and the law and, depending on the country the participants are in, may make the differences between being prosecuted or not.

A cuckold is the husband of an adulterous wife; the wife of an adulterous husband is a cuckquean. In biology, a cuckold is a male who unwittingly invests parental effort in juveniles who are not genetically his offspring.

Discipline in BDSM is the practice in which the dominant sets rules which the submissive is expected to obey. When rules of expected behaviour are broken, punishment is often used as a means of disciplining.

Dominance and submission is a set of behaviours, customs, and rituals involving the submission of one person to another in an erotic episode or lifestyle. It is a subset of BDSM. This form of sexual contact and pleasure has been shown to please a minority of people.

A dominatrix is a woman who takes the dominant role in BDSM activities. A dominatrix might be of any sexual orientation, but her orientation does not necessarily limit the genders of her submissive partners. Dominatrices are known for inflicting physical pain on their submissives, but this is not done in every case. In some instances erotic humiliation is used, such as verbal humiliation or the assignment of humiliating tasks. Dominatrices also make use of other forms of servitude. A dominatrix is typically a paid professional (pro-domme) as the term dominatrix is little-used within the non-professional BDSM scene.

In BDSM, edgeplay is a subjective term for activity that may challenge the conventional S.S.C. scheme; if one is aware of the risks and consequences and is willing to accept them, then the activity is considered RACK.

Erotic humiliation is consensual psychological humiliation performed in order to produce erotic excitement or sexual arousal. This can be for either the person(s) being humiliated and demeaned or the person(s) humiliating, or both. It is sometimes performed before spectators, including pornography and webcam viewers. It may be part of BDSM and other sexual roleplay, or accompanied by the sexual stimulation of the genitals of one or both parties in the activity.

Fear play is any sexual activity involving the use of fear to create sexual arousal. Unlike masochistic tendencies, fear play does not offer the subject pleasure or arousal through a rush of endorphins, but rather a terrified mental state which triggers a release of adrenaline. Some have likened its role to that of horror movies, in providing a harmless outlet in which to feel frightened.

Female submission or femsub is an activity or relationship in which a woman consents to submit to the direction of a sexual partner or allows her body to be used sexually by or for the sexual pleasure of her partner. The expression is often associated with BDSM, when the woman voluntarily and consensually submits to such activity. Submission usually involves a degree of trust by the woman in her partner. The dominant partner is usually a man, but can also be another woman, or there can be multiple dominant partners simultaneously. The submissive woman may derive sexual pleasure or emotional gratification from relinquishing control to a trusted dominant partner.

Feminization or feminisation, sometimes forced feminization, and also known as sissification, is a practice in dominance and submission or kink subcultures, involving reversal of gender roles and making a submissive male take on a feminine role, which includes cross-dressing. Subsets of the practice include sissy training and variations thereof, where the submissive male is trained to become feminine. Feminization as a sexual fetish is not the same thing as being a transgender woman, and the submissive partners engaging in it are typically heterosexual men. It has been speculated that the fetish is rooted in societal pressure for men to be traditionally masculine.

A fetish model is a model who models fetish clothing or devices that augment their body in a fetish-like manner or in fetishistic situations, though they may not work exclusively in that form of modeling.

Figging is the practice of inserting a piece of skinned ginger root into the human anus or the vagina in order to generate an acute burning sensation. Historically this was a method of punishment, but it has since been adopted as a practice of BDSM. The term "figging" comes from the 19th-century word "feaguing."

Urolagnia is a paraphilia in which sexual excitement is associated with the sight or thought of urine or urination.

The handkerchief code is a system of color-coded cloth handkerchief or bandanas for non-verbally communicating one's interests in sexual activities and fetishes. The color of the handkerchief identifies a particular activity, and the pocket it is worn in identifies the wearer's preferred role in that activity. Wearing a handkerchief on the left side of the body typically indicates one is a "top", while wearing it on the right side of the body would indicate one is a "bottom". For example, a dark blue handkerchief indicates an interest in anal sex, and wearing it in the left pocket indicates a preference for being the insertive partner. The code was most widely used in the 1970s in the United States, Canada, Australia, and Europe, by gay and bisexual men seeking casual sex, or BDSM practitioners.

Human furniture is furniture in which a person's body is used as a tray, foot stool, chair, table, cabinet or other item. In some cases a sculpture of a human body is used instead. Examples of human furniture have appeared in modern art. Forniphilia is the practice of creating human furniture in fetish photography and bondage pornography.
An interrogation scene is a form of BDSM roleplay in which the participants act out the parts of torturer and victim. As in real life torture chambers throughout the world over, the "torturer" uses threats, humiliation and physical pain to extract whatever information they believe the "victim" possesses. The game is over when the victim has broken and divulged the secret. The length and severity of the scene will vary according to the temperament of the players. Dedicated players attempt to replicate the atmosphere of a real torture session and, as in real life, the "victim" can expect to be stripped naked, tied up, mocked and abused.

Gor is the fictional setting for a series of sword and planet novels written by philosophy professor John Lange, writing as John Norman. The setting was first described in the 1966 novel Tarnsman of Gor. The series is inspired by science fantasy pulp fiction works by Edgar Rice Burroughs. It also includes erotica and philosophy content. The Gor series repeatedly depicts men abducting and physically and sexually brutalizing women, who grow to enjoy their submissive state. According to The Encyclopedia of Science Fiction, Norman's "sexual philosophy" is "widely detested", but the books have inspired a Gorean subculture. In particular, virtual simulations of role-playing Gorean communities in the video game Second Life are considered one of the most visible phenomena related to the Gorean subculture.

In human sexuality, kinkiness is the use of non-conventional sexual practices, concepts or fantasies. The term derives from the idea of a "bend" in one's sexual behaviour, to contrast such behaviour with "straight" or "vanilla" sexual mores and proclivities. It is thus a colloquial term for non-normative sexual behaviour. The term "kink" has been claimed by some who practice sexual fetishism as a term or synonym for their practices, indicating a range of sexual and sexualistic practices from playful to sexual objectification and certain paraphilias. In the 21st century the term "kink", along with expressions like BDSM, leather and fetish, has become more commonly used than the term paraphilia. Some universities also feature student organizations focused on kink, within the context of wider LGBTI concerns. Psychologist Margie Nichols describes kink as one of the "variations that make up the 'Q' in LGBTQ".

In BDSM, limits refer to issues that participants in a play scene or dynamic feel strongly about, usually referring to prohibited activities. Participants typically negotiate an outline of what activities will and will not take place. The participants describe what they desire, do not desire, will and will not tolerate, including the determination of limits. For example, it is common to set a safeword and to establish certain types of play as prohibited.

Male dominance, or maledom, refers to BDSM activities where the dominant partner is male.

Male submission or malesub is a situation in BDSM and other sexual activities in which the submissive partner is male. A woman who dominates a male submissive is referred to as a dominant, domme or dominatrix. Sexual activity between a male submissive and a dominatrix is referred to as femdom. A 2015 study indicates that 46.6% of men who are active in BDSM expressed a preference for a submissive role, 24% consider themselves to be switches and 29.5% prefer the dominant role.

Nose torture is a classic Japanese form of BDSM, that usually involves a hook applied in the nose — so called nosehook — that pulls the nose backwards. The level of pain and discomfort caused by this form of nose bondage is variable based on how hard the nosehook is made to pull. It is a mixture of real pain and humiliation for the slave to be in nose bondage and other forms of nose torture.

Pegging is a sexual practice in which a woman performs anal sex on a man by penetrating his anus with a strap-on dildo.

Play, within BDSM circles, is any of the wide variety of "kinky" activities. This includes both physical and mental activities, covering a wide range of intensities and levels of social acceptability. The term originated in the BDSM club and party communities, indicating the activities taking place within a scene. It has since extended to the full range of BDSM activities.

Play piercing, needle play, or recreational acupuncture is body piercing done for the purpose of enjoying the experience rather than producing a permanent body decoration. Needles, sharpened bones, or other tools used in play piercing are removed from the body when the episode is complete, allowing the wounds to heal. Those who engage in play piercing may do so for self-expression, imitating tribal rituals, spiritual self-discovery, sexual pleasure, or entertainment.

The Ring of O is a specially designed ring which has been worn as a distinctive mark among BDSM practitioners, mainly in continental Europe — and especially the German-speaking countries — since the 1990s. Its use is relatively widespread within this subculture. Its name derives from the name of the central female character in the classic BDSM novel Story of O, who was a sex slave and wore an analogous ring.

Risk-aware consensual kink is an acronym used by some of the BDSM community to describe a philosophical view that is generally permissive of certain risky sexual behaviors, as long as the participants are fully aware of the risks. This is often viewed in contrast to safe, sane, and consensual which generally holds that only activities that are considered safe, sane, and consensual are permitted.

Rope bondage, also referred to as rope play, kinbaku, shibari or fesselspiele, is bondage involving the use of rope to restrict movement, wrap, suspend, or restrain a person, as part of BDSM activities. Japanese bondage is the most publicly visible style of rope bondage. An alternative style, "Western bondage" is about achieving restraint; the Japanese style is more concerned with the artistry of the process.
Scrotal inflation, or scrotal infusion, is an unusual sexual practice in which fluid is injected into the scrotum in order to make it balloon in size. It carries a number of risks of serious complications, including scrotal cellulitis and subcutaneous emphysema, and possibly fatal complications such as Fournier's gangrene or air embolism.

Sexual roleplay is roleplay that has a strong erotic element. It may involve two or more people who act out roles in order to bring to life a sexual fantasy and may be a form of foreplay and be sexually arousing. Many people regard sexual roleplay as a means of overcoming sexual inhibitions. It may take place in the real world, or via an internet forum, chat-room, video-game, or email—allowing for physically or virtually impossible erotic interests to be enacted.

In BDSM, Master/slave, M/s or sexual slavery is a relationship in which one individual serves another in a consensual authority-exchange structured relationship. Unlike Dominant/submissive structures found in BDSM in which love is often the core value, service and obedience are often the core values in Master/slave structures. The participants may be of any gender or sexual orientation. The relationship uses the term "slave" because of the association of the term with ownership rights of a master to their slave's body, as property or chattel. While male "masters" will usually be referred to as "Master", whether or not female Masters are referred to as "Master" or "Mistress" may depend upon whether they identify as following the leather subculture or BDSM path, or simply preference.

The terms top, bottom, and switch are used to describe roles for the duration of a sexual act or they may more broadly denote a psychological, social, or sexual identity, or indicate one's usual preference. The terms top, bottom, and switch are also used in BDSM, with slightly different meanings. In both contexts, the terms top and bottom refer to dominant or submissive, or active and passive roles, not to who is physically on top in a particular sexual act. The older term "versatile" is sometimes used instead of "switch."

The terms top, bottom, and switch are used to describe roles for the duration of a sexual act or they may more broadly denote a psychological, social, or sexual identity, or indicate one's usual preference. The terms top, bottom, and switch are also used in BDSM, with slightly different meanings. In both contexts, the terms top and bottom refer to dominant or submissive, or active and passive roles, not to who is physically on top in a particular sexual act. The older term "versatile" is sometimes used instead of "switch."

Wax play is a form of temperature play practiced in a BDSM context, in which wax from a candle is dripped onto a person's naked skin, in order to introduce a slight burning sensation to the skin.