Nonchalant
/ˌnɒn.ʃəˈlɑːnt/noun
Casually unconcerned or indifferent.
Did you know?French nonchalant comes from non- + chaloir, “to care” or literally “to be warm,” so the word began as a kind of emotional coldness rather than stylish confidence.
Etymological Timeline
Latin
Latin
calēre
“to be warm; to be hot”
Old French
Old French
chaloir
“to care about; to matter”
Old French
Old French
nonchalant
“uncaring; indifferent”
18th Century
French/English
nonchalant
“coolly unconcerned; casually indifferent”
Modern English
English
nonchalant
“showing a relaxed lack of concern”