Assidere etymology in Latin

Latin word assidere comes from Latin ad ((direction) toward, to, on, up to, for.), Latin ad- (To.)

Dictionary entry	Language	Definition
ad	Latin (lat)	(direction) toward, to, on, up to, for.
ad-	Latin (lat)	To.
sedeo	Latin (lat)	I hold or hang fast or firm; I am established. I keep the field, remain encamped. I settle or sink down, subside. I sit in an official seat; sit in council or court, hold court, preside. I sit still; remain, tarry, stay, abide, linger, loiter; sit around. I sit, I am seated.

Assidere etymology