lacking in concern or involvement not worried; untroubled
WordReference Random House Unabridged Dictionary of American English © 2025
un•con•cerned
(un′kən sûrnd′),USA pronunciation adj.
un•con•cern•ed•ly
(un′kən sûr′nid lē),USA pronunciation adv.
un′con•cern′ed•ness, n.
- not involved or interested; disinterested.
- not caring;
unworried;
free from solicitude or anxiety.
- un-1 + concerned 1625–35
- 2.See corresponding entry in Unabridged . untroubled, unperturbed, composed, carefree.
Collins Concise English Dictionary © HarperCollins Publishers::
un•con•cern /ˌʌnkənˈsɜrn/USA pronunciation
n. [uncountable]
WordReference Random House Unabridged Dictionary of American English © 2025- absence of concern;
indifference.
un•con•cern
(un′kən sûrn′),USA pronunciation n.
- absence of feeling or concern;
indifference. - freedom from anxiety.
- un-1 + concern 1660–70
- 1.See corresponding entry in Unabridged nonchalance, insouciance. See indifference.
'unconcerned' also found in these entries (note: many are not synonyms or translations):
apathetic
- areligious
- asocial
- attentive
- care
- careless
- casual
- cold
- damn
- frivolous
- happy-go-lucky
- heedless
- incurious
- insouciant
- nonchalant
- reckless
- regardless
- solicitous
- uninterested