English Reference
adjective

ominous

adj.
US /ˈɑmənəs/ UK /ˈɒmɪnəs/ omi·nous

  1. 01 B2 Upper Intermediate

    suggesting that something unpleasant or dangerous is about to happen.

    giving the impression that something bad or unpleasant is going to happen; threatening or inauspicious.

    Simple

    The dark, heavy clouds looked ominous as we started our hike.

    In context

    The sudden, ominous silence from the engine room suggested a mechanical failure far more serious than a simple blown fuse.

    Usage

    Often used to describe sounds, weather, or a heavy silence.

    Teacher's tip

    While the root 'omen' can be positive or negative, 'ominous' is almost exclusively used for negative expectations.

  2. 02 C2 Proficiency LiteraryFormal

    connected to signs that predict the future.

    of or pertaining to an omen; serving as a sign of a future event, whether good or bad.

    Simple

    The ancient priest studied the ominous flight of the birds.

    In context

    In classical literature, even a seemingly minor event could be interpreted as an ominous sign of the gods' shifting favour.

    Usage

    In modern English, this neutral sense is rare and usually replaced by 'portentous'.

    Teacher's tip

    This is the original etymological sense, but it is rarely encountered outside of academic or historical texts.

    propheticportentous

Here, Magnus Coffinkey, a man who makes a living fixing bells, climbs a tower to complete the most difficult job of his career, one made harder by ominous gargoyles and bats.

The Guardian· 29 Aug 2026

From Latin ōminōsus (“full of foreboding”), from ōmen (“forbidden fruit, omen”), from Old Latin osmen, of uncertain origin, with many origins proposed (see ōmen).

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

This entry
Origin itc-ola osmen
Level B2 · Upper Intermediate
Frequency Frequent
Updated