round down
"round-down" is a 9-letter English headword indexed on PlainSpell.
The verdict
“round down” is outside the top-ranked English vocabulary, used as a verb - the kind of word writers most often double-check.
- Unranked
- below top-frequency English
- 10
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - To round (a number) to the greatest integer that is not greater than it, or to some other lower value, especially a whole number of hundreds, thousands, etc.
| Property | Value |
|---|---|
| Headword | round down |
| Language | English |
| Part of speech | Verb |
| Letters | 10 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “round down” sits in English frequency
Spelling & Dictionary Insight
The English entry for round down is 10 letters long, classified as a verb. 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: "To round (a number) to the greatest integer that is not greater than it, or to some other lower value, especially a whole number of hundreds, thousands, etc.".
No misspelling variants are generated for round down in our index, since its letter pattern doesn't lend itself to common typo substitutions. No confusable counterpart is on file for this word, since no other headword is close enough in sound or shape to pair with it.
Our source data has no etymology on file for this entry, so its spelling is best read as a straightforward mapping from sound to letter. The correct English form is round down, spelled R-O-U-N-D- -D-O-W-N.
Definition
- 1To round (a number) to the greatest integer that is not greater than it, or to some other lower value, especially a whole number of hundreds, thousands, etc.
This word in other languages
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 “round down”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is R-O-U-N-D- -D-O-W-N - 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.