Latin word -cisus comes from Proto-Indo-European *kh₂eyd-, Latin caedere, and later Proto-Italic *kaidō (To cut, to hew, to fell.)
*kh₂eyd- (Proto-Indo-European)
caedere (Latin)
*kaidō (Proto-Italic)
To cut, to hew, to fell.
caedo (Latin)
Cut, hew, fell.. Defeat decisively (defeat with heavy losses to the enemy side).. Kill.. Strike, beat.
caesus (Latin)
-cisus (Latin)