Not quite right?
"Search similar patterns."
I________________
Definitions
tireless determination
Word origin
From indefatigable + -ness.
Used in a sentence
“. . . but too much security on the republican part will give time to his talents and indefatigableness to extricate them.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer0 curated clues
No curated clues for indefatigableness yet.