Where does “sibcest” come from?

sibcest (English) comes from English sibling, from Old English sibling, from Old English -ling, from Old English lang, from Proto-West Germanic lang, from Proto-Germanic langaz, from Proto-Indo-European dlongʰos — long.

sibcest (English): Sexual or romantic relations between siblings

Definitions

  1. Sexual or romantic relations between siblings

Ancestry of “sibcest”, step by step

sibcest traces back through two separate lines of ancestry.

via English sibling

StepLanguageWordMeaning
1EnglishsiblingA person who shares a parent; one's brother or...
2Old Englishsiblingrelative, kinsman
3Old English-lingadverbial suffix denoting direction, state or...
4Old Englishlanglong; lasting; old, ancient; advanced
5Proto-West Germaniclanglong
6Proto-Germaniclangazlong
7Proto-Indo-Europeandlongʰoslong

via English cest

StepLanguageWordMeaning
1EnglishcestA woman's girdle; a cestus
2Latincestusa girdle, tie, band or strap worn around the...
3Latincaestusa type of boxing glove made from a strap of...
4Latincaedōto cut, hew, fell
5Proto-Italickaidōto cut, to hew, to fell
6Proto-Indo-Europeankeh₂id-
Every word from Proto-Indo-European dlongʰos