nonchalantly
Definitions
In a casually calm and relaxed manner.
In a way that displays a lack of interest, enthusiasm, or concern.
Examples
He nonchalantly leaned against the wall while the chaos unfolded around him.
She nonchalantly tossed her keys onto the table and walked into the kitchen.
Despite the high stakes of the presentation, he spoke nonchalantly as if he had practiced for weeks.
Synonyms
casually indifferently unconcernedly coolly composedly apathetically detachedly
Antonyms
anxiously nervously concernedly agitatedly enthusiastically passionately earnestly