ˌənˈflapəbəl adjective
( -es )
Etymology: un- (I) + flap (II) + -able
: marked by assurance and self-control : imperturbable
the most unflappable of politicians — Anthony Lewis
• un·flap·pa·bil·i·ty -ˌflapəˈbiləd.ē noun
• un·flap·pa·bly -ˈflapəblē adverb