As an adjective unflappable
is remaining composed and level-headed at all times; unswayed by adversity or excitement; impossible to fluster; not becoming frustrated or irritated easily.
As an adverb serenely is
in a serene manner.
unflappable
English
Adjective
(
en adjective)
Remaining composed and level-headed at all times; unswayed by adversity or excitement; impossible to fluster; not becoming frustrated or irritated easily.
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Synonyms
* (remaining composed under pressure) collected, cool, even-keeled
Antonyms
* (remaining composed under pressure) flappable
Related terms
* flappable
* unflappability
* unflappableness
* unflappably