Webster’s Revised Unabridged Dictionary · 1913 Tactic Tac′tic, Tac′tic·al, a. [Gr. τακτικός. See tactics.] Of or pertaining to the art of military and naval tactics. — Tac′tic·al·ly, adv. Tac′tic (·tĭk), n. See Tactics. ‹ Tactful Tactical ›