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Flatly vs Nonchalant - What's the difference?

flatly | nonchalant |

As an adverb flatly

is in a definite manner; in a manner showing complete certainty.

As an adjective nonchalant is

casually calm and relaxed.

flatly

English

Adverb

(en adverb)
  • In a definite manner; in a manner showing complete certainty.
    • It was an accusation that he flatly denied.
  • In a manner that shows no emotion
    • He replied flatly to the policeman's questions.

    Usage notes

    * In sense 1. the collocation is nearly always with a negative idea. To flatly deny''. To ''flatly refuse''. To ''flatly contradict . And so on, similarly.

    nonchalant

    English

    Adjective

    (en adjective)
  • Casually calm and relaxed.
    • We handled the whole frenetic situation with a nonchalant attitude.
  • Indifferent; unconcerned; behaving as if detached.
    • He is far too nonchalant about such a serious matter.

    Synonyms

    * (casually calm) carefree, cool, mellow, easygoing * (indifferent) , unconcerned * See also