- The definition of unflappable is not easily flustered.
When you can deal with an unexpected storm and the caterer not showing up on your wedding day without getting upset, this is an example of when you would be described asunflappable.
unflappable definition by Webster's New World
Origin: ; from un- plush flap, plush -able
- unflappability noun
unflappable definition by American Heritage Dictionary
- un·flapˌpa·bilˈi·ty noun
- un·flapˈpa·bly adverb