Did you by any chance mean one of these? thinnest, tiniest, twines, twinges, twinset
Definitions
Etymologies
- Blend of twin and incest (Wiktionary)
Examples
“(I hate that they've introduced "twincest" into my lexicon ...) - This article about how John Travolta”
“Plus of course "twincest," something that usually is found in shoujo manga with two twin boys.”
“Fans have even nicknamed their relationship, "twincest," giving it an identity that, in some ways, seems to normalize it.”
“Don't you mean the things you do for illegal twincest?”
Top Moments: Dancing's Sex on a Stick and a Surprise 30 Rock Cameo
“There were plenty of sordidness to enjoy in this week's Game of Thrones animal-gutting, twincest rationale, lesbian sex instruction, the smell of death, but the story was mostly about what didn't happen or has yet to.”
Game of Thrones' Most Chilling Moment: The Promise of White Walkers
“For the cable networks to chill out with all the incest except for Game of Thrones' twincest, of course because we don't need that to become mainstream.”
“[Jan. 5th, 2008 | 07: 19 pm] [Tags | self-improvement, twincest]”
I hereby resign my leadership of the Sexy Twins For All Party
“I don't make many guarantees it's basically that and Fern Gully II will suck but I guarantee Queen Gorgo is gonna rock the twincest.”
“It falls to the fruit of the twincest, Siegfried (an appealingly guileless Nick Vidal), to rescue and marry Brünnhilde.”
“These twins are the impish, mischievous brothers who capture the hearts of girls who enjoy their touchy-feely, twincest moments.”
Lists
These user-created lists contain the word ‘twincest’.
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sionnach's Words
contumely, fomite, holmgang, poltroon, eleemosynary, obsidian, nugatory, grindcore, felch, recrudescent, pyx, parenteral and 3271 more...
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slang
fanfic slang, hacker jargon, Internet memes etc. that amuse me—mainly ones I might wish to incorporate as natural in my own writing
asamoth, beta, borg, bozo filter, canon rape, delurk, drabble, eated, eleven, facepalm, fangirl, fanon and 61 more...
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The Dictionary of Me
Things I say.
skrull, less than three, sub rosa, the goddamn batman, my parents are dead, real brooklyn, i am the night, reverse vampire, nom nom nom, woobie, twincest, pontificate and 5 more...
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You Could Write a Fanfic Too!
This way lies madness.
fanfic, fanon, shipper, squick, mary sue, slash, femslash, twincest, drabble, het, lolicon, pairing and 4 more...
Tweets
Looking for tweets for twincest.

rolig Superlative form of twince, "cringingly quaint" (i.e. twee+wince). Jul 1, 2011
sionnach I think we all know the Ring Cycle doesn't exactly end well for all concerned. Jul 1, 2011
Prolagus Is that a spoiler?! Jul 1, 2011
ruzuzu Would this be the word for that uncomfortable kiss between Luke and Leia in The Empire Stikes Back? Jul 1, 2011
sionnach The most concise word to describe the relationship between Siegmund and Sieglinde in Wagner's Ring Cycle. The offspring of their incestuous coupling is the "hero" Siegfried, who is - perhaps not surprisingly - stupid to a degree that borders on mental retardation.
Of course, the only "hero" in the entire cycle is Bruennhilde, and not just because of the vocal pyrotechnics that her role demands. Jul 1, 2011
sakhalinskii If they're identical, is this narcissism? Aug 4, 2008
mollusque t*winces*t Aug 4, 2008
recombinantdna Don't ask, don't tell. Aug 4, 2008
seanahan I'm sorry, but ewwwwwwwwwwwwwwwwwwwww.
If I had never read this word, I think I would be happier. Jun 22, 2007
slumry UGGGGGGGGG...but I see what u mean. Jun 21, 2007
uselessness I think this one's pretty self-explanatory. Not exactly the kind of thing I wanted to mention on here, but I like the formation of the word. Jun 21, 2007