twincest
Incestuous sexual relations between twins, or siblings who look very similarIncestuous sexual relations between twins, or siblings who look very similar.
/ˈtwɪn.sɛst/
Meaning
1 senses(slang, uncountable)Incestuous sexual relations between twins, or siblings who look very similar.
Origin
Blend of twin + incest, equivalent to twin + -cest.Blend of twin + incest, equivalent to twin + -cest.
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Word family
2 related wordsLessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable