The Encyclopedia of Desire

The Kink & Fetish Encyclopedia

Every term, defined plainly and without judgment. Start typing — the index below sorts and filters itself as you go.

110
Terms A–Z
12
Categories
250+
In-depth guides
Safety-reviewedFact-checked · Cited & current
Popular
Quick answer

What is a kink?

A kink is any consensual sexual interest, act, or fantasy that falls outside conventional expectations — from light bondage to elaborate roleplay. A fetish is a related, more specific form where a particular object, material, or body part becomes central to arousal. Both are extraordinarily common, and exploring them safely is a matter of consent, communication, and care.

Safety-reviewed before publishingWritten by experienced educatorsUpdated June 2026
The Editor's Cut

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A note from the editors

You don't need a label to begin.

Most people arrive looking up one word they heard somewhere. That's the perfect place to start. Read the definition, follow your curiosity to the next term, and let the map draw itself — nothing here assumes you've done any of it, only that you're curious.

— The Know Your Sins editorial desk

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Twelve doors into desire

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Each category is its own hub — a curated route through related practices, beginner to advanced. Tap a tile, or use it as a filter on the index below.

The complete index

The A–Z of everything

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High search demand Advanced — safety noteCategory shown in gold
110 of 110 terms
Terms marked ⚠ Advanced involve real physical or psychological risk. Treat our guides as a starting point — never a substitute for hands-on training, negotiated consent, and informed risk-awareness.
A5 terms

The tender wind-down after intense play — comfort, reassurance and reconnection.

BDSMDefinition

Consensual roleplay of a younger headspace, between adults, for comfort or control.

Roleplay

Erotic stimulation of the anus — broad, common and very lubricant-dependent.

Practices

Arousal centred on the underarm — scent, sweat, hair or the act of worship.

Fetishes

Restricting breath for erotic intensity — among the highest-risk practices there is.

Oxygen deprivation can kill without warning; many educators advise against it entirely.

EdgeAdvanced
B9 terms

Removing sight to sharpen every other sense and deepen trust and surrender.

Sensory

Eroticising blood — visually or by sensation; carries serious infection and safety risk.

Blood-borne infection risk is real; sterile tools and tested partners are non-negotiable.

EdgeAdvanced

The erotic art of restraint — rope, cuffs or cloth that binds willing bodies.

BDSM

Purpose-built gear — benches, crosses, cages — that holds a body in position.

Objects

Playfully defiant submission — resisting on purpose to provoke the chase and the consequence.

Psych

Controlling breathing for heightened sensation — thrilling, and genuinely dangerous without training.

High-risk: never solo, never with pressure on the windpipe, always with a clear signal.

EdgeAdvanced

Fantasy fixated on conception and unprotected finishing — usually pure roleplay, not intent.

Body

A group act where multiple partners climax onto one willing recipient.

Practices
C9 terms

Precise strikes with a thin rod — sharp, stinging and intensely lingering.

Impact

Consensual pain or pressure on the genitals — demands careful technique and limits.

Genital tissue injures easily; start gentle, agree hard limits, and stop on any numbness.

EdgeAdvanced

Surrendering control of orgasm — often via a locked device and a keyholder.

Objects

Pre-negotiated roleplay of resistance — every limit agreed long before the scene.

Only ethical with explicit prior consent, firm limits and a non-verbal safe signal.

EdgeAdvanced

Giving or accepting a collar — a meaningful symbol of commitment and belonging.

BDSM

The erotic discipline of tight-lacing — restriction, posture and dramatic shape.

Objects

Arousal from watching or knowing a partner is with someone else.

Humiliation

The woman-centred counterpart to cuckolding — desire built on a partner's other lover.

Humiliation
D6 terms

Consensual put-downs and 'use' that some find liberating — always negotiated, never real contempt.

Humiliation

Rules, expectations and consequences — the structured backbone of many D/s dynamics.

BDSM

An intimate act joining two foreskinned penises — niche, tender and trust-heavy.

Practices

Taking erotic control — leading, directing and holding responsibility for a willing partner.

BDSM
E3 terms

Riding the brink of orgasm again and again before finally — maybe — releasing.

Psych

Arousal from being watched — the thrill of being seen, consensually, in the act.

Fetishes
F11 terms

Using consensual fear and adrenaline as fuel — requires deep trust and aftercare.

Fear floods the body with adrenaline; only with deep trust, clear limits and real aftercare.

EdgeAdvanced

Eroticising feeding, fullness or weight gain between a feeder and feedee.

FetishesDefinition

An advanced act involving the retrieval of fluids after sex — niche and explicit.

Practices

Female-led dominance — she sets the terms, the pace and the rules.

BDSM

Brief, controlled flame on the skin for heat and spectacle — true burn risk.

Genuine burn risk; demands training, fire-safe products and water on hand at all times.

EdgeAdvancedDefinition

Gradual insertion of the whole hand — patient, lube-heavy and trust-dependent.

Practices

Rhythmic strikes with a many-tailed whip — from sensual thud to sharp sting.

Impact

The most common fetish of all — arousal centred on feet, toes and worship.

Fetishes

Erotic expression within anthropomorphic-animal personas — 'yiff' is the sexual side.

Fantasy
G3 terms

Mouth restraints that limit speech — silence, drool and surrender in one object.

Objects

Roleplay using firearms as props — only ever safe when verifiably unloaded.

Use only a checked, unloaded or replica weapon; never point a functional firearm at anyone.

EdgeAdvanced
H4 terms

Worn straps that frame the body or anchor restraints — equal parts form and function.

Objects

A partner enjoys others with enthusiastic blessing — pride, not humiliation.

Humiliation

Eroticised embarrassment, agreed in advance — the blush is the whole point.

Humiliation
I2 terms

Cold against warm skin — a beginner-friendly gateway into temperature play.

Sensory

Any consensual striking for pleasure — spanking, flogging, caning and beyond.

Impact
J1 term
K3 terms

Adopting feline personas — playful, instinctive and affectionate pet-play.

Roleplay

Using blades for fear and sensation — even blunt edges demand serious caution.

Even a dull blade can cut; keep it away from arteries and never near a struggling partner.

EdgeAdvancedDefinition
L4 terms

Eroticising breast milk and nursing — sensation, intimacy and nurturing combined.

Body

The shine, scent and full-body hug of rubber — a fetish of second skin.

Objects

The classic fetish material — smell, creak and the authority it signals.

Objects

Intimate apparel as the trigger — the reveal, the fabric, the anticipation.

Objects
M4 terms

Fantasy of giants or being tiny — scale itself as the source of arousal.

FantasyDefinition

Finding pleasure in receiving consensual pain — sensation reframed as reward.

BDSM

Clinical roleplay with exams and instruments — vulnerability dressed in authority.

RoleplayDefinition

Erotic roleplay with monstrous or non-human characters — fantasy at full volume.

Fantasy
N2 terms

Consensual derogatory talk — words chosen together to thrill, not to wound.

Humiliation

Piercing skin with sterile needles for sensation — strict hygiene is non-negotiable.

Pierces the skin barrier; sterile single-use needles and proper sharps disposal are essential.

EdgeAdvanced
O3 terms

Roleplay of being treated as a thing — furniture, decoration or tool, by consent.

Psych
P9 terms

Broad, thuddy impact with a flat paddle — beginner-friendly and deeply satisfying.

Impact

A partner penetrating a man with a strap-on — increasingly mainstream.

Practices

Taking on an animal persona — puppy, kitten or pony — for play and headspace.

Roleplay

The deliberate handing-over of control — the engine beneath every D/s dynamic.

BDSM

Arousal from being told you're good — 'good girl' and 'good boy' as reward.

Psych

Eroticising pregnancy or its imagery — fertility and fullness as the draw.

Body

Instinct over protocol — growling, chasing, biting and raw animal energy.

Roleplay

Agreed rules of conduct in a dynamic — posture, address and ritual.

BDSM

Embodying a playful pup — loyal, energetic headspace, often with gear.

Roleplay
R2 terms

Oral-anal stimulation — intimate, sensitive and very hygiene-aware.

Practices

Restraint and decoration through tied rope — skill, patience and beautiful results.

BDSM
S15 terms

Finding pleasure in giving consensual pain — care and control intertwined.

BDSM

The pairing of giving and receiving pain — the S and M of BDSM.

BDSM

Exploring touch, texture and temperature — feathers, ice, silk and bite.

Sensory

Finding fulfilment in acts of service — devotion expressed through usefulness.

BDSM

Sleep-themed roleplay — only ever ethical when fully pre-negotiated while awake.

Consent cannot be given while asleep; negotiate every detail in advance, awake and sober.

EdgeAdvanced

Inserting a smooth rod into the urethra — sterile technique is essential.

The urethra tears and infects easily; use only body-safe, sterile sounds and ample lube.

PracticesAdvanced

The classic open-hand strike — playful, punishing and endlessly versatile.

Impact

Wearable toys that let anyone penetrate — versatile and identity-flexible.

Objects

The pleasure of yielding control — trust, surrender and the relief of letting go.

BDSM

Lifting a bound body off the ground with rope — advanced, with real fall risk.

Carries fall and nerve-damage risk; pursue only after hands-on rope training with a mentor.

BDSMAdvanced

One who moves between dominant and submissive roles as the mood takes them.

BDSM
T5 terms

A classic authority-roleplay between consenting adults — lessons, rules and reward.

Roleplay

Playing hot against cold — wax, ice and metal across sensitised skin.

Sensory

Erotic fantasy of tentacled creatures — a vivid staple of fantasy erotica.

Fantasy

Consensual tickling for laughter, squirming and a uniquely helpless thrill.

Sensory
U2 terms

Arousal sparked by uniforms — the authority, ritual and fantasy they signal.

FetishesDefinition
V3 terms

Vampire-themed eroticism — biting, blood imagery and seductive predation.

Fantasy

Fantasy of consuming or being consumed whole — purely imaginative play.

Fantasy

Arousal from watching others — always of consenting adults, never covert.

Fetishes
W3 terms

Dripping warm candle wax across the skin — heat, anticipation and aftermath.

Sensory

Single-tail strikes for sharp, precise intensity — a true craft to wield well.

Impact
Y1 term

The explicitly sexual side of furry culture and anthropomorphic personas.

Fantasy
Z1 term

Full-body second-skin suits — the erotic appeal of total, smooth enclosure.

Fetishes

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The Playful Switch
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Submission
Experiment.
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Written from experience

Every entry is written by experienced educators who live and breathe this world — plain language, real practice, zero judgment.

MRL+

Fact-checked & current

Definitions are fact-checked against standard glossaries and safety-reviewed before publishing, then dated so you know they’re current and cited.

Safety-first by design

Higher-risk practices carry an explicit consent and risk-awareness note. We’d rather you read twice than rush once.

Before you explore

Common questions

What's the difference between a kink and a fetish?
A kink is any consensual interest outside the conventional — a flavour you enjoy. A fetish is more specific and often necessary for arousal: a particular object, material, or body part that's central, not optional. All fetishes are kinks; not all kinks are fetishes.
Is it normal to have kinks?
Yes — overwhelmingly so. Large surveys consistently find that the majority of adults report at least one kink or fantasy outside the “vanilla” norm. Having them says nothing about your character, only about the breadth of human desire.
How many kinks are there?
There's no fixed number — desire doesn't come in a finite set. Our encyclopedia catalogues 110+ named terms across 12 categories, and we add more as language and practice evolve.
How do I explore a kink safely?
Start with informed consent and a conversation. Read up first, agree on boundaries and a safeword, go slow, and check in often. For anything marked Advanced, seek hands-on instruction before you try it — reading is the beginning, not the qualification.
Who writes Know Your Sins?
Our entries are written by experienced educators and fact-checked against standard references, then safety-reviewed before publishing. We don't claim clinical credentials — we offer lived experience, careful research, and current, judgment-free information.
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