Ef‐fect″ive (?), a. [L. effectivus: cf. F. effectif.] Having the power to produce an effect or effects; producing a decided or decisive effect; efficient; serviceable; operative; as, an effective force, remedy, speech; the effective men in a regiment.
They are not effective of anything, nor leave no work behind them. Bacon.
Whosoever is an effective, real cause of doing his heighbor wrong, is criminal. Jer. Taylor.
Syn. — Efficient; forcible; active; powerful; energetic; competent. See Effectual.