IPA: //ʌnˈbreɪkəbl//
KK: /ʌnˈbreɪkəbl/
Something that cannot be broken or damaged easily, often used to describe strong materials or objects.
The unbreakable phone case protected my device from all drops and impacts.
A thing that cannot be broken easily or at all.
The unbreakable glass survived the fall without a scratch.
Unbreakable → It is formed from "un-" (meaning not) and "break" (from Old English "brecan", meaning to shatter or destroy) and "-able" (meaning capable of). The word "unbreakable" means not capable of being shattered or destroyed.
Think of something that is 'not' ('un-') able to be 'shattered' ('break') — that's why unbreakable means it cannot be broken.