Definition

Something that cannot be broken through or overcome.

Example

The fortress was designed to be unbreachable, protecting its inhabitants from any attack.

Conversation

I heard they built an unbreachable security system for the bank.

Really? That sounds impressive!

I wonder how they made it so unbreachable if that’s even possible.

Technology has come a long way, so I wouldn’t be surprised!

Synonyms & Antonyms

Root Explanation

Unbreachable → It is formed from "un-" (meaning not) and "breach" (from Old English "bryce", meaning to break). The suffix "-able" (meaning capable of) indicates that something cannot be broken. Therefore, "unbreachable" means not capable of being broken or penetrated.

Memory Tip

Think of something that is 'not' ('un-') able to be 'broken' ('breach') — that's why unbreachable means it cannot be broken.

Visually Confused Words