adverb
nonchalantly; casually; unconcernedly
Colloquial adverb derived from さりげない, used when someone acts as if nothing is special or tries not to show their true feelings. Often implies a deliberate attempt to appear casual.
See also: さりげない
彼はさり気に彼女の隣に座った。
He casually sat down next to her.
さり気に話題を
I nonchalantly changed the subject.
The adjective form meaning 'nonchalant' or 'casual'; さり気に is the adverbial form used colloquially.
Also means 'casually' or 'without thinking', but 何気なく emphasizes lack of intention, while さり気に often implies a conscious effort to appear casual.
Derived from the adjective さりげない (然り気無い), which combines 然り (thus, so) with 気 (feeling) and 無い (not). The adverbial form さり気に is a colloquial shortening.