English Reference
adjective

hysterical

adj.
US /hɪˈstɛɹɪkəɫ/ UK /hɪstˈɛɹɪkəl/ hys·ter·i·cal

  1. 01 B2 Upper Intermediate

    unable to control your feelings or behavior because you are extremely frightened, angry, or excited.

    characterised by a state of extreme, uncontrolled emotion, often involving crying or laughter due to panic or shock.

    Simple

    The crowd became hysterical when the fire alarm started ringing in the dark theatre.

    In context

    By the time the rescue team arrived, the survivors were hysterical with relief, making it difficult for the medics to assess their injuries.

  2. 02 B2 Upper Intermediate Informal

    extremely funny, making you laugh a lot.

    provoking uncontrollable laughter; used as a superlative for humorous content.

    Simple

    You have to see this video of the cat; it is absolutely hysterical.

    In context

    The comedian's observations about office life were so hysterical that several audience members were reduced to tears of laughter.

    hilariousuproarious
    seriousunfunny

And because he is so reasonable, it makes Richard seem hysterical.

The Guardian· 20 Aug 2026

From hysteric + -al, from Latin hystericus, from Ancient Greek ὑστερικός (husterikós, “suffering in the womb, hysterical”), from ῠ̔στέρᾱ (hŭstérā, “womb”).

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

This entry
Origin Ancient Greek ὑστερικός
Level B2 · Upper Intermediate
Frequency Frequent
Updated