Definitions
The quality of being strong, durable, or hard to overcome.
Word origin
From Middle English toughnesse, towghnesse, towghenesse, equivalent to tough + -ness.
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer2 curated clues
01“Durability”9 letters
02“Grit”9 letters
Not quite right?
"Search similar patterns."
T________