Unscramble

i 1 n 1 d 2 e 1 f 4 a 1 t 1 i 1 g 2 a 1 b 3 l 1 e 1

13 letters · 20 points in Scrabble

Meaning

adjective showing sustained enthusiastic action with unflagging vitality

originFrom Middle French, from Latin indēfatīgābilis (“untiring”), from in- (“not”) + dēfatīgō (“to tire out”).

Etymology from Wiktionary, CC BY-SA 3.0

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