The SmutWords Glossary

Every trope, kink, fetish, and dynamic explained in plain language — plus real books to read for each one.

All Tropes Kinks Fetishes Dynamics Practices
All A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
trope

Mafia Romance

A story where the hero (and occasionally the heroine) is involved in organized crime, often as a boss, enforcer, or heir, and the romance develops amid violence, power struggles, and moral gray areas. The heroine is often pulled into his world, and the love story is framed by loyalty, danger, and a protective obsession.

trope

Mail Order Bride

A woman who agrees to marry a man she has never met, often through letters or an agency, and travels to his location to become his wife, typically in a historical frontier setting.

kink

Makeup Sex

Makeup sex is the intense, emotionally charged intimacy that happens after a couple resolves a fight, where the heat of the argument turns into physical reconnection.

kink

Marking Kink

Marking kink is the erotic practice of leaving a visible physical sign on a partner's body, like a hickey, bite mark, scratch, or temporary tattoo, often as a claim of ownership or a reminder of a sexual encounter.

trope

Marriage Bed Trope

The Marriage Bed Trope centers on a married couple whose physical intimacy has stalled, fractured, or become a site of tension, and the story follows them as they navigate their way back to desire and connection within the bounds of their vows.

trope

Marriage in Trouble

A married couple, often long together, faces a crisis that threatens to end their union, forcing them to confront the issues driving them apart and decide if their love is worth saving.

trope

Marriage of Convenience

A plot where two characters marry for practical reasons rather than love, often to secure an inheritance, gain citizenship, or fulfill a family obligation, only to find themselves falling for each other.

kink

Masochism

Masochism is the erotic enjoyment of receiving pain, humiliation, or submission, where the intensity of the experience is a source of arousal and pleasure for the masochist.

kink

Massage Roleplay

A scene where partners act out a therapeutic or sensual massage, often starting with a pretext of relaxation or muscle tension before shifting into intimate or erotic territory. The focus is on touch, power dynamics, and the pretense of caregiving.

trope

Matchmaker Romance

A story where a protagonist, often a meddling friend or family member, actively schemes to pair up two people, sometimes while falling for one of them themselves or while being the target of someone else's matchmaking.

kink

Matchmaking Mother Kink

trope

Mate Bond

A supernatural or paranormal romance trope where two characters are fated to be romantic and sexual partners, often marked by a physical or psychic connection that intensifies their bond and makes them irresistible to each other.

dynamic

Mate Claiming

A scene where a supernatural or paranormal character physically, emotionally, and sometimes magically binds their partner to them as their fated or chosen mate, often involving a bite, mark, or shared blood.

trope

Medieval Romance

A romance plot set in the Middle Ages, often featuring knights, castles, lords and ladies, with the central love story woven into a backdrop of court intrigue, warfare, or quests. The hero is frequently a noble warrior or a man of lower rank proving his worth, while the heroine may be a lady of the keep, a healer, or a spirited commoner.

dynamic

Mermaid Romance

A romance centered on a human and a mermaid or merman, often bridging two worlds and exploring themes of longing, sacrifice, and the price of love across land and sea.

dynamic

Merman Romance

A romance in which one love interest is a merman (or mermaid), blending underwater fantasy with human relationships, often involving a pull between two worlds.

trope

Military Romance

A romance where at least one protagonist is active-duty military, a veteran, or otherwise embedded in a military world, and the love story unfolds against deployments, base life, or the aftermath of service.

kink

Milking Kink

A kink centered on the act of expressing milk from the breasts, often framed as a service, a power exchange, or a site of intense physical pleasure for the lactating partner. In erotic fiction, it can involve hand expression, pumping, or suckling, and is often tied to pregnancy, postpartum bodies, or a 'lactation' fetish.

practice

Milking Table Scene

kink

Mind Control Kink

A kink where one partner exerts psychological or supernatural influence over another's thoughts, desires, or actions, often playing with the tension between losing autonomy and surrendering to someone else's will in a scene or story.

dynamic

Minotaur Romance

A romance in which one partner is a minotaur, a bull-headed humanoid, often depicted as a fierce, isolated beast who becomes tender and devoted once bound to a mortal lover. These stories typically blend primal lust with a raw, protective sweetness.

fetish

Mirror Play

Mirror play is a visual kink where partners use mirrors during sex to watch themselves or each other, turning the act into a shared spectacle of arousal and self-awareness. It often involves positioning mirrors to catch specific angles, deepening the sense of exposure and intimacy.

kink

MMF Threesome

A sexual encounter involving one woman and two men, where all three are actively engaged with each other, often including bi or heteroflexible dynamics between the men.

kink

Monster Cock Kink

A kink centered on the erotic appeal of a partner with an exceptionally large or supernatural penis, often seen in paranormal and sci-fi romance.

dynamic

Monster Romance

A romance subgenre where the love interest is a non-human creature, such as a vampire, shapeshifter, alien, or cryptid, whose monstrous nature is central to the appeal.

trope

Morally Grey Hero

A male lead whose actions, motivations, or past land him outside the traditional hero mold, often using questionable methods to achieve ends that may be selfish, vengeful, or justifiable only in his own mind.

trope

Motorcycle Club Romance

A romance subgenre where the hero is a member of an outlaw motorcycle club, often the president or enforcer, and the heroine becomes entangled with his dangerous world of brotherhood, rivalry, and loyalty.

dynamic

Multiple Mates Dynamic

A romantic or erotic storyline in which one protagonist bonds sexually and emotionally with two or more partners simultaneously, often within a pack, triad, or polyamorous household, with all parties aware and consenting to the arrangement.

kink

Multiple Orgasms

The ability or experience of achieving two or more orgasms within a single sexual encounter, often with little to no refractory period. It is a common fantasy and praised skill in erotic fiction, particularly for female characters.

kink

Multiple Partners Romance

A romance where the protagonist is involved with more than one partner, whether in a polyamorous relationship, a love triangle that resolves into a group dynamic, or a series of sequential hookups with different people as the central focus.

practice

Munch (Kink Social)

A munuch is a casual, non-play social gathering where kink and BDSM community members meet in vanilla spaces like bars or cafes to connect, share experiences, and build friendships outside of scenes.

fetish

Muscle Worship

Muscle Worship is a fetish in which one partner reveres, touches, kisses, or verbally praises the other's physique, focusing intensely on specific muscle groups like biceps, abs, chest, or thighs.

trope

Musician Romance

A contemporary romance subgenre where one or both protagonists are professional or aspiring musicians, with plotlines built around tours, studios, groupies, and the chaos of a life on the road.