Kinktionary
More like guidelines and a lot less like definitions.
Relationships
Adult Nursing RelationshipAmbiamoryAnchor PartnerBromanceBondedCollaredComet PartnerCrushingCuddle BuddyDynamicEthical Non-MonogamyExclusiveFemale-Led RelationshipFlockFriends With Mutual FeelingsHouseIntimateJoyfriendKindred SpiritLeather FamilyLife PartnerLong-Distance DynamicLong-Distance RelationshipLoverMonogamishMonogamyNesting PartnerPackPlatonicPlay PartnerPolyamoryProtectingPolycuriousQueer Platonic PartnerRelationship AnarchistRope PartnerSatellite PartnerScene PartnerSituationshipSolo PolySoulmateTaken in HandTribeTwin FlameUncollaredUnder Protection