Nonbreakable is a synonym of unbreakable.
As adjectives the difference between unbreakable and nonbreakable
is that unbreakable is difficult to break and therefore able to withstand rough usage while nonbreakable is not easily broken.
As a noun unbreakable
is something that cannot be broken.
unbreakable
English
Adjective
(
en adjective)
difficult to break and therefore able to withstand rough usage
(of a horse) not able to be broken in
Antonyms
*breakable
*fragile
Noun
(
en noun)
Something that cannot be broken.
nonbreakable
English
Synonyms
* unbreakable
Antonyms
* fragile