but

/ˈbʌt/

//ˈbʌt// prep

By · According to Wiktionary data (CC BY-SA) ·

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

The verdict

“but” sits in 20 confusable pairs (corpus #25) as a preposition. The look-alike neighbours are the real trap.

#25
frequency rank, English
4,121
“B” headwords
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 2, 2026) - Apart from, except (for), excluding.

Corpus desk

Index EN-but · but · English

but · rank #25 · 0 variants · 20 confusables

  • FREQ-CORE #25
  • LEN-MID 3 letters
  • VOW-1 1 vowel
  • CONFUS-HIGH 20 pairs
  • VAR-0 0 variants
  • BOOK-MID 4,121
  • PHOTO-FINISH by

Nearest frequency peer: by (-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 neighbourhood for “but”

Lower corpus rank = more everyday usage (inverted bar length for readability)

corpus weight

What this shows Bars show where “but” sits against the nearest ranked English headwords in the FrequencyWords band, not a reprint of letter-browse containment.

Source FrequencyWords open word-frequency list As of September 2, 2026

Visual similarity to commonly confused words

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

but vs by
33% similar
but vs BW
0% similar
but vs BX
0% similar

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

Key facts for but
PropertyValue
Headwordbut
LanguageEnglish
Part of speechPreposition
IPA/ˈbʌt/
Letters3
Frequency rank#25
Misspellings tracked0
Confusable pairs20
SourceWiktionary (kaikki.org)

Where “but” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). but lands here:

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

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Easy to mix with look-alikes

The spelling risk for but is neighbouring look-alikes ("by", "BW", …), not just typos; it is apreposition pronounced /ˈbʌt/. Frequency #25 among 4,121 “B” headwords. 2 recorded senses keep meaning in play.

but doesn't appear in our generated misspelling index, a straightforward case of a spelling with little room for common typos. It also participates in 20 confusable-pair relationships, "by", "BW", "BX", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: From Middle English but, buten, boute, bouten, from Old English būtan (“without, outside of, except, only”), from Proto-West Germanic *biūtan, *biūtini, equivalent to be- + out. Cognate with Scots but, bot (“outside, without, but”), Saterland Frisian buute … The correct English form is but, spelled B-U-T.

Definition

  1. 1
    Apart from, except (for), excluding.
  2. 2
    Outside of.

Recorded use

Wiktionary examples

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

  1. Everyone but Father left early.
  2. I like everything but that.

Etymology

From Middle English but, buten, boute, bouten, from Old English būtan (“without, outside of, except, only”), from Proto-West Germanic *biūtan, *biūtini, equivalent to be- + out. Cognate with Scots but, bot (“outside, without, but”), Saterland Frisian buute (“without”), West Frisian bûten (“outside of, apart from, other than, except, but”), Dutch buiten (“outside”), Dutch Low Saxon buten (“outside”), German Low German buuten, buute (“outside”), obsolete German baußen (“outside”), Luxembourgish baussen. Compare bin, about.

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.

PlainSpell is rendered directly from structured Wiktionary extracts and open word-frequency lists, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of September 2, 2026. Primary sources: Wiktionary (via kaikki.org) and FrequencyWords.

Frequently Asked Questions

How do you spell "but"?
"but" is spelled B-U-T. The IPA pronunciation is /ˈbʌt/.
What does "but" mean?
As a preposition, "but" means: Apart from, except (for), excluding.
What words are commonly confused with "but"?
"but" is commonly confused with "by", "BW", "BX". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "but"?
The IPA (International Phonetic Alphabet) transcription for "but" is /ˈbʌt/. 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 "but"?
From Middle English but, buten, boute, bouten, from Old English būtan (“without, outside of, except, only”), from Proto-West Germanic *biūtan, *biūtini, equivalent to be- + out. Cognate with Scots but, bot (“outside, without, but”), Saterland Fris... 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 "but", not the corpus desk frequency band.

Same letter count

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

not#23are#19all#32his#34

What to do next

You've looked up "but". Here's where to go from here.

  • "but" maps to 20 confusable pairs in this vintage; the highest-scored is "by". View pair
  • Usage frequency rank #25 among English headwords in this corpus. Corpus statistics
  • Browse more English words in the "B" letter cohort. B–Z browse

PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.

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.

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

Source: FrequencyWords open word-frequency list