Insecure synonyms such as diffident, anxious, and apprehensive. Insecure is an adjective, and its antonyms are confident and assured. Additionally, here are 30 synonyms, related words, and verbs for insecure.
anxious, apprehensive, diffident, doubtful, fearful, hesitant, ill at ease, inhibited, introverted, lacking confidence, lacking self-confidence, meek, mousy, not self-assured, passive, retiring, self-conscious, self-doubting, self-effacing, shrinking, shy, timid, timorous, unassertive, uncertain, unconfident, unforthcoming, unsure, and worried.