round down

verb

"round-down" is a 9-letter English headword indexed on PlainSpell.

The verdict

“round down” is uncommon English (outside the top frequency list), classed as a verb. The kind of spelling people second-guess.

Unranked
below top-frequency English
10
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 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.

Corpus desk

Index EN-round-down · round down · English

round down · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 10 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "R" thin
  • PHOTO-UNK Peer pending

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Key facts for round down
PropertyValue
Headwordround down
LanguageEnglish
Part of speechVerb
Letters10
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “round down” in English

round downsits beyond the 100,000 most-frequent English words, in the long tail of technical, archaic, or otherwise rare vocabulary where spelling doubt tends to strike hardest.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

round down is uncommon English outside the top frequency list, classed as averb. Rarity is why readers land here mid-draft. Gloss: "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

  1. 1
    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.

Recorded use

Wiktionary example

These source excerpts show how round down appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. The total is $25,715, but to keep the figures simple, I'll round it down to $25,000.

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

How do you spell "round down"?
"round down" is spelled R-O-U-N-D- -D-O-W-N.
What does "round down" mean?
As a verb, "round down" means: 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.
What language does "round down" come from?
"round down" is a English word. You can look up definitions, pronunciations, and spelling data for this and other words across English, Spanish, Portuguese, French, and German on PlainSpell.
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.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list