UNREADY Meaning of UNREADY in English 1. adj.1 not ready. 2 not prompt in action. Derivatives: unreadily adv. unreadiness n.2. adj. archaic lacking good advice; rash (Ethelred the Unready). Etymology: UN-(1) + REDE, assim. to UNREADY(1) Oxford English vocab. Оксфордский английский словарь. 2012