casually
Definitions
In a relaxed, informal, or unconcerned manner.
Without serious intention or commitment; incidentally.
In a way that is not formal or dressy.
Examples
She leaned against the wall and casually checked her watch.
He mentioned the news quite casually, as if it were of no importance.
They were dressed casually for the weekend trip to the mountains.
Synonyms
informally nonchalantly carelessly relaxed offhandedly incidentally unconcernedly
Antonyms
formally seriously deliberately intentionally rigorously carefully purposefully