Hyphenation
un·break·a·bleSynonyms
adamantine,
armored,
brass-bound,
durable,
everlasting,
firm,
incorruptible,
indestructible,
infrangible,
invulnerable,
lasting,
nonbreakable,
perdurable,
resistant,
ruggedPronunciation
Etymology
(prefix.) Middle English, from Old English un-, on-, alteration of and- against; more at ANTE-.