Abduction: to kidnap or carry a person away by force, also used in sex play
Abrasions: scratching or rubbing off skin
Abstinence: celibacy, refraining from all sexual activity
AC/DC: bisexual
Acarophilia: Affinity for itching
Achluophilia: Love of darkness
Acmegenesis: orgasm
Acomoclitic: Preference for hairless genitals
Acousticophilia: arousal from sounds
Acrophilia: arousal from heights or high altitudes
Acrotomophilia: sexual preference for amputees
Actirasty: To become aroused from exposure to sun's rays
Active: the aggressive sexual partner
Acucullophallia: circumcision
Acupressure: pressure points on body that induce certain responses, some sexual
Acyesis: Female sterility
Adamitism: Going naked for God
Adolescentilism: cross-dressing or playing the role of an adolescent
Adult Play:  Sex play or swinging.
Adult:  Euphemism for pornographic or containing images, descriptions and information not intended for persons under the age of 18.
Adultery. Sexual intercourse between a man and woman who are not married to each other outside of a marriage.
Aelurophilia: Deriving gratification from cats
Afterglow: the good feeling experienced after sex, especially the feeling of a woman after an orgasm.
Agalmatophilia: arousal from statues or mannequins
Agamic: Asexual
Age play: role playing involving pretending to be a child and often wearing children's clothing. Adult babies.
Agenobiosis: married couple who consent to live together without sex
Agonophilia: person who is aroused by partner pretending to struggle
Agoraphilia: arousal from open spaces or having sex in public
Agrexophilia: arousal from others knowing you are having sex
Aichmophilia: Love of needles and other pointed objects
Airtight:  Requires one lady and three men. The lady has one man in her mouth, one in her pussy and one in her ass.
Aischrolatreia: Worship of filth, smut; obscenity cult
Albutophilia: arousal from water
Algophilia: arousal or sexual satisfaction resulting from giving or receiving pain; sadism or masochism, or 
Aliphineur: person using lotion to arouse partner sexually
All Cultures: person or couple who enjoys all fetishes and sexual activities.
Alloerasty: use of nudity of another person to arouse partner
Allopellia: having orgasm from watching others engaging in sex
Allorgasmia: arousal from fantasizing about someone other than one's partner
Allotriorasty: arousal from partners of other nations or races
Alphamegamia: arousal from partner of different age group
Alternative lifestyle:  Sexual preference that is very different from the "norm," making it necessary and/or desirable. If the alternative sexuality is less common than the norm it will push the individual to reach an accepted subculture.
Alternative sexuality: A sexual orientation with a few variations that differ from vaginal intercourse when a monogamous heterosexual relationship has been established.
Altocalciphilia: high heel fetish
Altoids: brand name of a breath mint, said to provide extra pleasure when used by a person giving fellatio
Alvinolagnia: stomach fetish
Amatripsis: masturbation by rubbing labia together 
Amaurophilia: preference for a blind or blindfolded sex partner
Amaxophilia: attraction to riding in cars and motor vehicles
Ambisextrous: Pertaining to a bisexual person
Ambisexual: bi-sexual individual
Amelotasis: attraction to absence of limb
Amelotation: loss of a limb
Amokoscisia: arousal or sexual frenzy with desire to slash or mutilate women
Amomaxia: sex in a parked car
Amphierotism: Capacity of erotic reaction toward either sex
Amphigentic Invert: An individual who regularly engages in sexual activity with persons of both genders
Amphisexual: bi-sexual
Amulierosis: Result of sexual privacy
Amychesis: the act of scratching partner during sexual passion
Amychophilia: Deriving sexual pleasure from being scratched
Anaclitism: arousal from items used as infant
Anacreontic: Erotic
Anal Beads: A string of small balls on a string. Designed to be inserted into the anus and pulled out to create sexual stimulation.
Anal intercourse: Using the rectum instead of the woman's vagina for sexual intercourse. Among homosexual men, anal intercourse is a primary sexual activity.
Anal: Anal intercourse; sometimes called "Greek."
Analinctus: licking anus
Analingus: kissing, rimming or penetration of anus with tongue
Anasteemaphilia: attraction to taller or shorter partners
Anaxiphilia: Act of falling in love with a loser by someone who should know better
Androgyne: a person psychologically intermediate between male and female; or a person who rejects a specifically male or female gender role.
Androgynophilia: bi-sexual
Androgyny: having both male & female characteristics
Androidism: arousal from robots with human features
Andromania: nymphomania
Androminetophilia: arousal from female partner who dresses like male
Androsodomy: anal sex with a male partner
Angel: male who pays for sexual acts
Anililagnia: arousal from older female sex partner
Animal play: When one or both partners pretend to be an animal (Ex: dog, horse) in a role play.
Animal Training: sexual activity with animals, usually dogs and women.
Anisonogamist: attraction to either older or younger partner
Anocratism: anal sex
Anomeatia: anal sex with a female partner
Anophelorastia: arousal from defiling or ravaging a partner
Anophilemia: kissing anus
Anoraptus: Rapist who only attacks elderly women
Anorgasmic: incapable of having an orgasm
Antholagnia: arousal from smelling flowers
Anthropomorphism: attributing human characteristics to half-human half-animal characters
Anthropophagolagnia: rape with cannibalism
Anthropophagy: cannibalism
Antiophilia: Fondness for floods
Antipudic: Covering one's genitals
Anus: the opening through which feces are eliminated, aka ass or asshole
Apellous: circumcision
Aphallatia: celibacy
Aphephilia: deriving pleasure from being touched
Aphilophrenia: a feeling that one is unloved or unwanted
Aphrodisiacs: drugs stimulating or enhance sexual desire / performance or response
Apistia: adultery
Apodysophilia: feverish desire to undress
Apotemnophilia: person who has sexual fantasies about loosing a limb
Arachnephilia: arousal from spiders
Around the World: kissing the entire body prior to intercourse
Arpagee: A raped woman
Arrhenothigmophilous: nymphomania
Arsometry: anal sex
Artificial insemination: deposit of sperm into the vagina by methods other than male penetration of the vagina
Arts: euphemism for fetishes.
Asceticism: religious self-denial often including celibacy
Asexual: absence of sexual feelings and thoughts
Asphyxiaphilia: arousal from lack of oxygen
Ass: the buttocks
Asshole: the anus
Asthenolagnia: arousal from weakness or being humiliated
Astyphia: Impotence
Asynodia: celibacy particularly due to impotence
Auctions: public sale with item or sex slave going to highest bidder
Aulophilia: Love of flutes
Auntie: an aging/older male homosexual
Autagonistophilia: exhibitionism, arousal from exposing naked body or genitals to strangers while on stage or while being photographed
Autassassinophilia: arousal from orchestrating one's own death by the hands of another
Autoerotic Asphyxia: arousal from oxygen deprivation and sometimes risk of dying
Autoerotic strangulation: suffocating oneself via strangulation for sexual stimulation, especially to increase the intensity of orgasm.
Autoerotica: self induced arousal
Autoeroticism: masturbation
Autofellatio: for a man to perform oral sex on himself, putting his penis in his own mouth.
Autogynephilia: arousal from cross-dressing
Automasochism: arousal from inflicting intense sensations or pain on one's own body
Automysophilia: arousal from being dirty or defiled
Autonepiophilia: infantilism; arousal from dressing or being treated like infant
Autopederasty: person inserting their own penis into their anus
Autophagy: self-cannibalism or eating own flesh
Autosadism: infliction of pain or injury on oneself to provide sexual pleasure
Avering: A boy's begging in the nude to arouse sympathy
Avisodomy: breaking neck of bird while penetrating it for sex
Axillism: penis penetrating an arm pit for sex