I made a nightmarish mistake.
Source: tatoeba (528458)
Nightmarish
Synonyms for "nightmarish" (9 found)
Ranked by relevance and common usage.
Closest matches (2)
Adjective(1 words)
Strong matches (3)
Related words (4)
Adjective(3 words)
Related word relations
OpenGloss and ConceptNet supply richer edges like generalizations, collocations, and derivations.
Synonyms
2 entriescoordinate
2 entriesderived
2 entriesderived from
1 entriesrelated to
1 entriessimilar
1 entriesTranslations
23 translations across 16 languages.
Dutch
1 entries- nachtmerrieachtig adj (resembling a nightmare)
Esperanto
1 entries- premsonĝa adj (resembling a nightmare)
Estonian
2 entries- košmaarne adj (resembling a nightmare)
- painajalik adj (resembling a nightmare)
Finnish
1 entries- painajaismainen adj (resembling a nightmare)
French
1 entries- cauchemardesque adj (resembling a nightmare)
German
4 entries- albtraumartig adj (resembling a nightmare)
- albtraumhaft adj (resembling a nightmare)
- alptraumartig adj (resembling a nightmare)
- alptraumhaft adj (resembling a nightmare)
Greek
1 entries- εφιαλτικός adj (resembling a nightmare)
Italian
1 entries- da incubo adj (resembling a nightmare)
Latvian
1 entries- murgains adj (resembling a nightmare)
Lithuanian
1 entries- košmariškas adj (resembling a nightmare)
Polish
1 entries- koszmarny adj (resembling a nightmare)
Portuguese
2 entries- more commonly “to be nightmarish” → “ser um pesadelo” adj (resembling a nightmare)
- pesadelar adj (resembling a nightmare)
Russian
1 entries- кошма́рный adj (resembling a nightmare)
Spanish
2 entries- apesadillado adj (resembling a nightmare)
- pesadillesco adj (resembling a nightmare)
Swedish
2 entries- mardrömsaktig adj (resembling a nightmare)
- mardrömslik adj (resembling a nightmare)
Volapük
1 entries- kojmarasümik adj (resembling a nightmare)
Sample sentences
8 total sentences available.
You had nightmarish dreams.
Source: tatoeba (6318503)
The drive home was nightmarish.
Source: tatoeba (11641570)
Bruno had a nightmarish story to tell.
Source: tatoeba (11681010)
Showing 4 of 8 available sentences.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.