Definition

To make something inactive or stop it from working.

Example

The technician had to deactivate the alarm system before starting the repairs.

Tense Forms

Conversation

Did you remember to deactivate your old account before creating a new one?

Oh no, I completely forgot about that!

You might want to do it soon, just to keep everything secure.

Good idea! I'll make sure to deactivate it later today.

Synonyms & Antonyms

Root Explanation

Deactivate → It is formed from "de-" (meaning down or away) and "activare" (meaning to make active). The word means to make something inactive or to take away its active status.

Memory Tip

Think of 'taking away' ('de-') the 'active' state of something — that's why deactivate means to make something inactive.

Visually Confused Words