tristress 

A shut-in mistress who is available for sexual purposes only. Generally she will have deficiencies (social or physical) which prevent her from qualifying as a mistress. A mistress and a tristress are two totally different things; a man can be proud of a mistress.

A gentleman should never be seen in public with his tristress

tristress by SimonsHole May 4, 2014

Tristansaurus-Rex 

The most dangerous of all dinosaurs for a number of reasons; Firstly it has opposable thumbs, Secondly it has a markedly larger brain than dinosaurs usually exhibit, and most importantly because it is the only one not extinct.

The Tristansaurus-Rex was locked in mortal combat with the imposing Chupacabra.

Tristansaurus-Rex by The_Last_one September 14, 2009

catroptric tristesse 

sadness that you'll never really know what other people think about you whether good or bad or if at all

I'm suffering from catroptric tristesse

catroptric tristesse by beautifulwordsandtheirmeanings November 10, 2019

Post-coital tristesse

The feeling of sadness , anxiety or depression after sex. It is mostly felt by all animals including humans except the female human and the rooster

We all have post-coital tristesse

Post-coital tristesse by Jawbone December 29, 2015

Tristeena 

The best individual possibly out there. Kind hearted. Full of advice. But can be bitchy. But thats ok because her kindness overrules!

Oh snap that Tristeena is amazing!

Tristeena by Luffyoualways December 22, 2016

catopric tristesse 

The sadness that you’ll never really know what other people thing of you, wether good, bad, or at all.

‘After taking a minute to think, a wave of catopric tristesse washed over me.

catopric tristesse by FunkyChicken888 December 2, 2022

Post Coital Tristesse

It’s when a human or an animal feels sad, depressed or just guilty efter sex

-Me and my boyfriend had sex yesterday and i just felt so sad and guilty afterwards
-oh that’s Post Coital Tristesse!

Post Coital Tristesse by ~The Original One~ April 23, 2019