Definition

A term used to refer to an unknown person who is the subject of an investigation, often in criminal cases.

Example

The detective was searching for clues to identify the unsub in the ongoing case.

Conversation

Did you hear about the recent case involving an unsub?

Yeah, I read something about it; the details are pretty shocking.

I wonder how they even identify the unsub in such complex cases.

It must be really challenging, especially with so many unknowns.

Synonyms & Antonyms

Root Explanation

Unsub → It is formed from "un-" (meaning not) and "sub" (from Latin "sub-", meaning under or below). The word "unsub" refers to someone who is not identified or is unknown, particularly in criminal contexts, as in an unidentified subject.

Memory Tip

Think of 'un-' meaning not, and 'sub' meaning under — this helps you remember that an 'unsub' is someone who is not identified or remains under the radar.

Visually Confused Words