adj, noun ·4 syllables ·Uncommon ·Advanced level

Definitions

Noun

1. 1
   Something that cannot be broken.

Adjective

1. 1
   Difficult or impossible to break and therefore able to withstand rough usage.

   "unbreakable comb"

2. 2
   Resilient. figuratively

   "the unbreakable spirit of the rebels"

3. 3
   Not able to be broken in.

Adjective

1. 1
   impossible to break especially under ordinary usage wordnet

Synonyms

All synonyms

indestructiblefirmindestructibleinfrangibleinfrangibleinviolable

Antonyms

All antonyms

avoidablebreakabledestroyabledestructible

Example

More examples

"The salesman claimed the windshield was unbreakable, testing it with a punch that went straight through it."

Etymology

From un- + break + -able.

Related phrases

sticks in a bundle are unbreakable

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.