nightmare

Spelling & Dictionary Insight

The English entry for nightmare is 9 letters long, classified as anoun, and transcribed in the International Phonetic Alphabet as /ˈnaɪt.mɛə/. Corpus data places it at rank #5,239 in overall English word frequency, indicating it appears regularly in written and spoken text.Wiktionary records 4 distinct senses for this headword, so context determines which meaning a reader should apply.

Our Hunspell-derived misspelling index lists 14 documented wrong-spelling variants for nightmare, with forms such as "inghtmare", "ngihtmare", and "nigghtmare". Each variant represents a distinct typo pattern that appears often enough in corpora to be worth flagging, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution.It is not paired with a close-neighbour confusable in our dataset, which tends to mean the word is visually distinctive enough to stand on its own.

Etymologically, the entry records: From Middle English nyghtmare, from Old English *nihtmare, equivalent to night + mare (“evil spirit believed to afflict a sleeping person”). Cognate with Scots nichtmare and nichtmeer, Dutch nachtmerrie, Middle Low German nachtmār, German Nachtmahr. Root origin matters for spelling because borrowed morphemes (Greek, Latin, Old French, Old English) carry their source-language orthographic conventions into modern English, which is why historical etymology is often the cleanest predictor of whether a cluster like "-ough", "-eau", or "-tion" will appear. For readers arriving here from a spelling check, the authoritative guidance is: the correct English form is nightmare, spelled N-I-G-H-T-M-A-R-E, and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.