Etymology 1. From Middle English sitten, from Old English sittan, from Proto-West Germanic *sittjan, from Proto-Germanic *sitjan
, from Proto-Indo-European *sed- ( sit ).

verb (used without object),sat or (Archaic) sate [sat, seyt]; sat or (Archaic) sitten [sit-n]; sitting. to rest with the body supported by the buttocks or thighs; be seated.