nonchalant

/ˈnɒn.ʃəl.ənt/adjective

Appearing relaxed and unworried, as if nothing matters much.

Example sentences

“She gave a nonchalant shrug when asked about the missed deadline.”
“He tried to look nonchalant, but his shaking hands gave him away.”

From French. The relaxed manner may be genuine or an act, and the word often hints it is an act.

Related words

nonstopContinuing without any pauses or breaks.nominateTo formally suggest someone for a job, position, or award.noodleA long thin or flat piece of dough, boiled and eaten in soups or with sauces.nomadA person belonging to a group that moves from place to place with their animals instead of settling in one home.nostalgiaA mixed feeling of happiness and sadness when remembering the past.nobleA person born into the aristocracy; a member of the highest social class.