Definition

To stop someone from doing something by making them feel afraid or uncertain.

Example

The warning signs were meant to deter people from entering the dangerous area.

Tense Forms

Conversation

I read that some signs can really deter people from littering.

That's true! A clear message can make a difference.

Yeah, I think if they see the signs, it might make them think twice.

Exactly! Sometimes a little reminder is all it takes.

Synonyms & Antonyms

Root Explanation

Deter → It is formed from "de-" (meaning away) and "terrere" (meaning to frighten). The word means to frighten someone away from taking an action.

Memory Tip

Think of someone being 'frightened away' ('terrere') from doing something — that's why deter means to prevent someone from acting.

Visually Confused Words