1. disquiet Anxiety is, according to its derivation, a choking disquiet, akin to anguish; anxiety is mental; anguish may be mental or physical; anguish is in regard to the known, anxiety in regard Synonyms: anxiety, anguish, disquiet, foreboding, perplexity, apprehension, disturbance, fretfulness, solicitude, care, dread, fretting, trouble, concern, fear, misgiving, worry Antonyms: apathy, calmness, confidence, light-heartedness, satisfaction, assurance, carelessness, ease, nonchalance, tranquillity