unflappablePronunciation: /ʌnˈflapəb(ə)l/Translate unflappable | into Italian Definition of unflappable adjective informal having or showing calmness in a crisis: I prided myself on being unflappable even in the most chaotic circumstances self-contained, unflappable Glaswegian common senseDerivatives unflappabilityPronunciation: /-ˈbɪlɪti/ noun unflappably adverb unflappable in other Oxford dictionaries Definition of unflappable in the US English dictionary