i 1 m 3 p 3 e 1 r 1 t 1 u 1 r 1 b 3 a 1 b 3 i 1 l 1 i 1 t 1 y 4
16 letters · 27 points in Scrabble
Meaning
noun calm and unruffled self-assurance
originEtymology tree Proto-Indo-European *né Proto-Indo-European *n̥- Proto-Italic *n̥- Latin in-bor. Middle English in- English im- English perturbability English imperturbability From im- + perturbability.
Etymology from Wiktionary, CC BY-SA 3.0