labefactō āvī, ātus, āre, freq. labefacio, to cause to totter, shake, overthrow: signum vectibus.

—Fig., to shake, throw down, overthrow, destroy, ruin, weaken: illius dignitatem: ad iudicem causam labefactari animadvertunt: labefactarat aratores superior annus: fidem pretio.

—To weaken in purpose, move: ab eā astute labefactarier, T.