Synonyms of unflappable
- 1. imperturbable, unflappable, composed (vs. discomposed)
- usage: not easily perturbed or excited or upset; marked by extreme calm and composure; "hitherto imperturbable, he now showed signs of alarm"; "an imperturbable self-possession"; "unflappable in a crisis"
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Definition and meaning of unflappable (Dictionary)