Nightmarish

adj

adj ·3 syllables ·Rare ·Advanced level

Definitions

Adjective
  1. 1
    Resembling a nightmare.

    "Meanwhile, the everyday landscape becomes more nightmarish and unmanageable each year."

Adjective
  1. 1
    extremely alarming wordnet

Synonyms

All synonyms
bloodcurdlingbloodcurdlinghair-raisinghellishhellishnightmarelike

Example

More examples

"The drive home was nightmarish."

Etymology

From nightmare + -ish.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.