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blue-hour

Definition, pronunciation, etymology, and usage for the English word. Free spelling reference powered by Wiktionary.

Letters

9 characters

Language

English

word origin

Source

Wiktionary

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Detailed reference entry for the English word "blue-hour", 9-letters, with pronunciation in International Phonetic Alphabet notation, etymology traced through Germanic and Romance roots where applicable, common misspelling variants catalogued from Hunspell error dictionaries, and usage frequency ranked against the top 100,000 English words in the Wordfreq corpus. PlainSpell covers English, Spanish, Portuguese, French, and German spelling with confusable-pair detection that highlights visually and phonetically similar words. This entry for "blue-hour" includes synonyms, antonyms, homophones, and cross-language translation pointers sourced from Wiktionary via the kaikki.org extract. Whether you are verifying the correct spelling of "blue-hour" for academic writing, checking homophone confusion, or exploring etymological origins, this page provides a citation-backed, free reference that requires no sign-up.

blue hour is aEnglishnoun. It means: The period of twilight when the Sun is approximately 4-8° below the horizon and the sky is within a range of blue colors. Pronounced /ˈbluː aʊə/.

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Key facts for blue hour
PropertyValue
Headwordblue hour
LanguageEnglish
Part of speechNoun
IPA/ˈbluː aʊə/
Letters9
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Frequency rank visualization

blue hour is not present in the top-100,000 ranked English corpus, typical for technical, archaic, or low-frequency vocabulary.

Source: Wordfreq corpus

Spelling & Dictionary Insight

The English entry for blue hour is 9 letters long, classified as anoun, and transcribed in the International Phonetic Alphabet as /ˈbluː aʊə/. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader.The dominant gloss from Wiktionary reads: "The period of twilight when the Sun is approximately 4-8° below the horizon and the sky is within a range of blue colors.".

No frequent misspelling variants are recorded for blue hour in our index, suggesting the orthography either follows predictable English patterns or the word is uncommon enough that typo corpora lack signal.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: Calque of French heure bleue. 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 blue hour, spelled B-L-U-E- -H-O-U-R, and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.

Definition

  1. 1
    The period of twilight when the Sun is approximately 4-8° below the horizon and the sky is within a range of blue colors.

Etymology

Calque of French heure bleue.

Synonyms

This word in other languages

Frequently Asked Questions

How do you spell "blue hour"?
"blue hour" is spelled B-L-U-E- -H-O-U-R. The IPA pronunciation is /ˈbluː aʊə/.
What does "blue hour" mean?
As a noun, "blue hour" means: The period of twilight when the Sun is approximately 4-8° below the horizon and the sky is within a range of blue colors.
How do you pronounce "blue hour"?
The IPA (International Phonetic Alphabet) transcription for "blue hour" is /ˈbluː aʊə/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "blue hour"?
Calque of French heure bleue. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Nearby English words

Other entries that begin with the letter B in our English index:

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Data Source: Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Frequency data from Wordfreq. Misspellings derived from Hunspell dictionaries.