noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   The quality or state of not being breakable. uncountable
2. 2
   a consistency of something that does not break under pressure wordnet

Synonyms

All synonyms

durabilityhardinesshardnessresistancestaminastiffness

Antonyms

All antonyms

breakableness

Etymology

From unbreakable + -ness.