Definition

The lower part of the jaw that holds the lower teeth and helps in chewing.

Example

The dentist examined the patient's underjaw for any signs of misalignment.

Conversation

Have you ever noticed how your underjaw moves when you talk?

Yeah, it’s kind of funny to think about!

I read that the underjaw plays a big role in our speech.

That makes sense, especially when pronouncing certain words.

Synonyms & Antonyms

Root Explanation

Underjaw → It is formed from "under" (from Old English "under", meaning beneath or below) and "jaw" (from Old English "ceaf", meaning jaw or jawbone). The word "underjaw" refers to the lower part of the jaw, situated beneath the upper jaw.

Memory Tip

Think of something that is 'beneath' ('under') the upper jaw — that's what 'underjaw' means.

Visually Confused Words