pro
/pɹəʊ/
"pro" is a 3-letter English headword indexed on PlainSpell.
The verdict
“pro” sits in 20 confusable pairs (corpus #1,232) as a noun. The look-alike neighbours are the real trap.
- #1,232
- frequency rank, English
- 4,417
- “P” headwords
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - An advantage of something, especially when contrasted with its disadvantages (cons).
Corpus desk
Index EN-pro · pro · English
pro · rank #1,232 · 0 variants · 20 confusables
- FREQ-COMMON #1,232
- LEN-MID 3 letters
- VOW-1 1 vowel
- CONFUS-HIGH 20 pairs
- VAR-0 0 variants
- BOOK-MID 4,417
- PHOTO-FINISH physical
Nearest frequency peer: physical (-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 “pro”
Lower corpus rank = more everyday usage (inverted bar length for readability)
- opening
opening
98,772 corpus weight
- opinion
opinion
98,771 corpus weight
- physical
physical
98,770 corpus weight
- pro
pro
98,769 corpus weight
- reach
reach
98,768 corpus weight
- rule
rule
98,767 corpus weight
What this shows Bars show where “pro” sits against the nearest ranked English headwords in the FrequencyWords band, not a reprint of letter-browse containment.
Visual similarity to commonly confused words
How many letter changes separate each confused pair (Levenshtein distance, normalized).
Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).
| Property | Value |
|---|---|
| Headword | pro |
| Language | English |
| Part of speech | Noun |
| IPA | /pɹəʊ/ |
| Letters | 3 |
| Frequency rank | #1,232 |
| Misspellings tracked | 0 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Where “pro” sits in English frequency
Easy to mix with look-alikes
The spelling risk for pro is neighbouring look-alikes ("pt", "PS", …), not just typos; it is anoun pronounced /pɹəʊ/. Frequency #1,232 among 4,417 “P” headwords. 2 recorded senses keep meaning in play.
The misspelling generator found no plausible variants for pro, suggesting the orthography follows predictable English patterns. It also participates in 20 confusable-pair relationships, "pt", "PS", "PU", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.
Etymologically, the entry records: From Late Middle English pro, from Latin prō (“on behalf of”). The correct English form is pro, spelled P-R-O.
Definition
- 1An advantage of something, especially when contrasted with its disadvantages (cons).
- 2A person who supports a concept or principle.
Recorded use
Wiktionary exampleThese source excerpts show how pro appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
What are the pros and cons of buying a car?
Etymology
From Late Middle English pro, from Latin prō (“on behalf of”).
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.
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 3, 2026. Primary sources: Wiktionary (via kaikki.org) and FrequencyWords.
Frequently Asked Questions
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "pro", not the corpus desk frequency band.
What to do next
You've looked up "pro". Here's where to go from here.
- "pro" maps to 20 confusable pairs in this vintage; the highest-scored is "pt". View pair
- Usage frequency rank #1,232 among English headwords in this corpus. Corpus statistics
- Browse more English words in the "P" letter cohort. P–Z browse
- PlainSpell rotates a curated Word of the Day from the English corpus, a passive way to discover vocabulary. Word of the Day
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.