half-baked \ˈ ̷ ̷| ̷ ̷\adjective 1.: only imperfectly baked : underdone 2. a.: not well planned : poorly contrived < a half-baked plan > b.: lacking judgment, intelligence, or common sense < a half-baked individual > < dramatic ideas that are often trivial or half-baked — Winthrop Sargeant >