From con- + cadō (“fall”).
concidō (present infinitive concidere, perfect active concidī); third conjugation, no passive
- I fall down or together, tumble to the ground, collapse, break down, drop.
- I fall down lifeless in combat, I am slaughtered or slain.
- I fall down faint.
- (figuratively) I lose strength or value; I am overthrown or defeated, fail; decay, perish, waste away, go to ruin.
- (figuratively, of the wind) I subside, go down, fall.
From con- + caedō (“cut; strike”).
concīdō (present infinitive concīdere, perfect active concīdī, supine concīsum); third conjugation
- I cut up, through, away or to pieces, break up.
- (of a person's reputation) I ruin, destroy.
- I cut to pieces, beat severely, cudgel soundly, thrash.
- I cut to pieces in war, cut down, destroy, kill.
- (figuratively, of discourse) I divide minutely, dismember, render feeble.
- (figuratively, by word or deed) I strike down, ruin, destroy, annul.
- (figuratively) I confute, deceive, cheat, defraud.