unbreakable
- adjective (adj)
Meaning: strong, tough
Synonyms:
adamantine
armored
brass-bound
durable
everlasting
firm
incorruptible
indestructible
infrangible
invulnerable
lasting
nonbreakable
perdurable
resistant
rugged
shatterproof
solid
tight
toughened
unshakable
unyielding
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.