Webster’s Revised Unabridged Dictionary · 1913 Pugnacious Pug·na′cious (pŭg·nā′shŭs), a. [L. pugnax, -acis, fr. pugnare to fight. Cf. Pugilism, Fist.] Disposed to fight; inclined to fighting; quarrelsome; fighting. —Pug·na′cious·ly, adv. — Pug·na′cious·ness, n. ‹ Pugilistic Pugnacity ›