Where does “besiege” come from?

Besiege comes from Middle English besegen, formed from the prefix bi- and verb -en, ultimately deriving from Old English bī, Proto-Indo-European h₁epi meaning "around," and sak- meaning "to settle," with influence from Latin -culus and Proto-Indo-European sed- meaning "to sit."

besiege (English): To beset or surround with armed forces for the...