oof

/uːf/

//uːf// intj

"oof" is a 3-letter English headword indexed on PlainSpell.

The verdict

“oof” sits in 20 confusable pairs (corpus #23,927) as an interjection. The look-alike neighbours are the real trap.

#23,927
frequency rank, English
1,431
“O” headwords
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A sound mimicking the loss of air, as if someone's solar plexus had just been struck.

Corpus desk

Index EN-oof · oof · English

oof · rank #23,927 · 0 variants · 20 confusables

  • FREQ-MID #23,927
  • LEN-MID 3 letters
  • VOW-2 2 vowels
  • CONFUS-HIGH 20 pairs
  • VAR-0 0 variants
  • BOOK-MID 1,431
  • PHOTO-FINISH omnibus

Nearest frequency peer: omnibus (-1 rank slots)

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.

Frequency neighbours of confusable “oof”

Peers at similar corpus weight, separate from look-alike pairs below

corpus weight

What this shows Bars place “oof” against nearest ranked English headwords, not a reprint of the confusable-pair desk.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

oof vs or
33% similar
oof vs op
33% similar
oof vs OS
0% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for oof
PropertyValue
Headwordoof
LanguageEnglish
Part of speechInterjection
IPA/uːf/
Letters3
Frequency rank#23,927
Misspellings tracked0
Confusable pairs20
SourceWiktionary (kaikki.org)

Corpus rank beside confusables of “oof”

Word frequency stretches from the small set of words we reach for constantly (left) out to the long tail barely used once in a while (right).ooflands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Same rarity band neighbours include “omnibus” (#23,926), “OPEC” (#23,928), “NYU” (#23,924). Among 1,431 “O” headwords, “oof” is #23,927. Source: FrequencyWords open word-frequency list.

Easy to mix with look-alikes

The spelling risk for oof is neighbouring look-alikes ("or", "op", …), not just typos; it is aninterjection pronounced /uːf/. Frequency #23,927 among 1,431 “O” headwords. 2 recorded senses keep meaning in play.

Zero misspellings are on record for oof in our index, suggesting the orthography follows predictable English patterns. It also participates in 20 confusable-pair relationships, "or", "op", "OS", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.

Etymologically, the entry records: An onomatopoeia. Similar to Dutch oef and German uff. The correct English form is oof, spelled O-O-F.

Definition

  1. 1
    A sound mimicking the loss of air, as if someone's solar plexus had just been struck.
  2. 2
    Synonym of ouch (“expressing sympathy at another's pain, shock at a high price, etc.”).

Recorded use

Wiktionary examples

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

  1. Whap, Biff, Ooooof, Sock, Pow, Zok! Batman is back. Gotham City is again leaving its law and order in the hands of a man who wears plastic underpants over his tights.
  2. "Oof, you just lost a lot of progress. That's a real frustration, a real punch in the gut."

Etymology

An onomatopoeia. Similar to Dutch oef and German uff.

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); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "oof"?
"oof" is spelled O-O-F. The IPA pronunciation is /uːf/.
What does "oof" mean?
As an interjection, "oof" means: A sound mimicking the loss of air, as if someone's solar plexus had just been struck.
What words are commonly confused with "oof"?
"oof" is commonly confused with "or", "op", "OS". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "oof"?
The IPA (International Phonetic Alphabet) transcription for "oof" is /uːf/. 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 "oof"?
An onomatopoeia. Similar to Dutch oef and German uff. 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.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "oof", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 3 letters (nearest by frequency rank).

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

Source: FrequencyWords open word-frequency list