English Reference
noun

idiot

n.
US /ˈɪˌdiət/ UK /ˈɪdɪət/ id·iot UK spelling idiot's, idiot's

  1. 01 B1 Intermediate Informal

    a person who does something very stupid or makes a bad decision.

    a person who acts in a foolish or reckless manner. While common in casual speech, it remains an insult and can be offensive depending on the context.

    Simple

    I felt like such an idiot when I realized I had left my keys inside the car.

    In context

    He was acting like a complete idiot, shouting at the waiter for a mistake that wasn't even the restaurant's fault.

    Usage

    Often used with the adjective 'complete', 'total', or 'absolute' for emphasis.

    Teacher's tip

    Learners should be aware that while friends might use this jokingly with each other, it is a genuine insult when directed at a stranger or used in a professional setting.

    foolmoronnitwit

The second is that she was competing in the age of social media, allowing every idiot with a phone to mock her performance in real time.

The Guardian· 1 Sept 2026

Is he a scam artist juicing idiots for cash?

The Guardian· 9 Sept 2026

From Middle English idiote, ydiote, from Old French idiote (later idiot), from Latin idiota, from Ancient Greek ἰδιώτης (idiṓtēs, “a private citizen, one who has no professional knowledge, layman”), from ἴδιος (ídios, “one's own, pertaining to oneself, private”). Doublet of idiota. By surface analysis, idi- + -ot.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin Ancient Greek ἰδιώτης
Level C1 · Advanced
Frequency Common
Updated