Synonyms:
casual, insouciant, nonchalant
Meaning: marked by blithe unconcern; "an ability to interest casual students"; "showed a casual disregard for cold weather"; "an utterly insouciant financial policy"; "an elegantly insouciant manner"; "drove his car with nonchalant abandon"; "was polite in a teasing nonchalant manner"
Usage examples
For a moment he watched her silently; then he continued slowly, in low, nonchalant tones:
Her father had finished his egg and hers too, before she appeared, as nonchalant and smiling as if she were out the earliest of all.
To suppose that great heat of weather will authorise this disorder of the toilet, and will permit us to go in slippers, or with our legs and arms bare, or to take nonchalant or improper attitudes, is an error of persons of a low class, or destitute of education.