1. (noun)nonchalance, unconcern, indifference the trait of remaining calm and seeming not to care; a casual lack of concern Synonyms: nonchalance, indifference, impassivity, phlegm, unconcern, spiritlessness, numbness, apathy, emotionlessness, impassiveness, stolidity, unemotionality Antonyms: concern
2. (noun)unconcern a feeling of lack of concern Synonyms: indifference, nonchalance Antonyms: concern
Synonyms, Thesaurus & Antonyms of 'unconcern'
English Synonyms and Antonyms
1. unconcern Apathy, according to its Greek derivation, is a simple absence of feeling or emotion. There are persons to whom a certain degree of apathy is natural, an innate sluggishness of the emotional na Synonyms: apathy, calmness, indifference, quietness, stoicism, composure, insensibility, quietude, tranquillity, immobility, lethargy, sluggishness, unconcern, impassibility, phlegm, stillness, unfeelingness Antonyms: agitation, disturbance, feeling, sensibility, sympathy, alarm, eagerness, frenzy, sensitiveness, turbulence, anxiety, emotion, fury, storm, vehemence, care, excitement, passion, susceptibility, violence, distress
Synonyms for unconcern 
