Entry 1 sense Webster, 1913 Doing /du'ing/ · Do·ing · IPA /ˈduːɪŋ/ 01 n. Anything done; a deed; an action good or bad; hence, in the plural, conduct; behavior. See Do. pl. Doings 1. Anything done; a deed; an action good or bad; hence, in the plural, conduct; behavior. See Do. See: Do “To render an account of his doings.” — Barrow.