From un- + flutter + -able. <span class="searchmatch">unflutterable</span> (comparative more <span class="searchmatch">unflutterable</span>, superlative most <span class="searchmatch">unflutterable</span>) Unable to be fluttered or flustered; calm...
calm and collected, superlative most calm and collected) Cool-headed; <span class="searchmatch">unflutterable</span>; composed. 2024 February 12, Ben Morse and Steve Almasy, “Kansas City...
fluttering elm flutterment flutter the dovecot flutter-tongue forflutter <span class="searchmatch">unflutterable</span> to flap or wave quickly to flap the wings without flying to cause something...