Also found in: Thesaurus.


1. Impossible to break; able to withstand rough usage: unbreakable plates.
2. Able to withstand an attempt to break. Used of a horse.
An article or object that is not easily broken.

un·break′a·ble·ness n.
un·break′a·bly adv.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.unbreakableness - a consistency of something that does not break under pressureunbreakableness - a consistency of something that does not break under pressure
consistency, eubstance, consistence, body - the property of holding together and retaining its shape; "wool has more body than rayon"; "when the dough has enough consistency it is ready to bake"
breakableness - the consistency of something that breaks under pressure
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in classic literature ?
She had been buggy-riding before, but always behind one horse, jaded, and livery, in a top-buggy, heavy and dingy, such as livery stables rent because of sturdy unbreakableness. But here stood two horses, head-tossing and restless, shouting in every high-light glint of their satin, golden-sorrel coats that they had never been rented out in all their glorious young lives.