peak hour
"peak-hour" is a 8-letter English headword indexed on PlainSpell.
The verdict
“peak hour” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 9
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Rush hour.
| Property | Value |
|---|---|
| Headword | peak hour |
| Language | English |
| Part of speech | Noun |
| Letters | 9 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “peak hour” sits in English frequency
Rare enough to double-check
peak hour is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. 2 senses are on record.
The misspelling generator found no plausible variants for peak hour, which points to an orthography that plays by predictable English rules. No close-neighbour confusable shows up for this headword in our dataset, which typically means the spelling is too distinctive to be mistaken for another word.
Wiktionary doesn't record an etymology for this headword, leaving phoneme-to-grapheme mapping as the best guide to its spelling rather than a borrowing history. The correct English form is peak hour, spelled P-E-A-K- -H-O-U-R.
Definition
- 1Rush hour.
- 2Relating to peak periods in traffic and transportation.
Antonyms
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “peak hour”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is P-E-A-K- -H-O-U-R - every other letter order is a misspelling in standard orthography.
- Browse more English words and confusable pairs in the same reference. English words
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.