Words that sound the same but mean different things, and how to keep them straight. Definitions draw on Wiktionary via kaikki.org, a structured export of over 1,000,000 English dictionary entries; see our methodology.
The short answer
Homophones sound identical but differ in spelling and meaning, English has far more than most languages because it absorbed words from several traditions that kept their original spellings, so their/there/they're is the most-misused group in written English.
- 2,182
- English homophone words indexed
- 5
- languages PlainSpell covers
- their/there
- the most-misused group
According to Wiktionary variant data (CC BY-SA, May 2026). Below: the most-confused pairs, how to keep them straight, and how the other languages compare.
The Most Commonly Confused Homophone Pairs
Each row shows words that are pronounced identically in standard American English. The definitions help distinguish when to use each form.
| Word 1 | Meaning | Word 2 | Meaning | Word 3 | Meaning |
|---|---|---|---|---|---|
| their | possessive (their car) | there | location (over there) | they're | they are (they're going) |
| your | possessive (your house) | you're | you are (you're right) | , | , |
| its | possessive (its color) | it's | it is (it's raining) | , | , |
| to | direction (go to school) | too | also / excessively (me too; too hot) | two | the number 2 |
| then | time sequence (first this, then that) | than | comparison (better than before) | , | , |
| accept | to receive (accept an offer) | except | excluding (everyone except me) | , | , |
| affect | verb: to influence (affects mood) | effect | noun: result (the effect) | , | , |
| weather | climate conditions (rainy weather) | whether | if (whether or not) | , | , |
| hear | perceive sound (hear that?) | here | this place (come here) | , | , |
| write | to compose (write a letter) | right | correct / direction | rite | a ceremony (rite of passage) |
| passed | verb past tense (passed the test) | past | noun/adjective (in the past; past midnight) | , | , |
| principal | school head / main (principal concern) | principle | a rule or belief (moral principle) | , | , |
| complement | to complete or go well with | compliment | praise or flattery | , | , |
| stationary | not moving (stationary bike) | stationery | writing materials (stationery shop) | , | , |
| pour | to flow (pour water) | pore | tiny opening / to study closely | poor | lacking money |
| peal | ring of bells (peal of laughter) | peel | to strip skin (peel an orange) | , | , |
| cite | to reference (cite a source) | sight | vision or view (beautiful sight) | site | a location (building site) |
| ail | to be unwell (what ails you) | ale | a type of beer (dark ale) | , | , |
| hoard | a stockpile (hoard of gold) | horde | a large group (horde of fans) | , | , |
| flair | natural talent (flair for design) | flare | a burst of light / to spread out | , | , |
The Big Three: Their, There, They're
No word group causes more written English errors than this trio. They are pronounced identically (rhymes with "air") but serve completely different grammatical functions.
their
Possessive pronoun. Shows ownership belonging to them.
"Their car is new."
there
Adverb of place, or expletive (there is/are).
"Put it there." / "There are five."
they're
Contraction of "they are." Expand to test.
"They're going home."
Quick test: substitute "they are" in your sentence. If it works, use they're. If you're pointing to a place or using "there is/are," use there. If you mean "belonging to them," use their.
Possessive vs Contraction: The Apostrophe Rule
Many of the most confused homophones involve choosing between a possessive and a contraction: its vs it's, your vs you're, their vs they're.
The rule: apostrophes in pronouns signal contractions, not possession. Unlike nouns (the dog's bone), pronouns use no apostrophe for possession: its, your, their, whose. The apostrophe versions always contract two words: it's = it is, you're = you are, they're = they are, who's = who is.
| Possessive (no apostrophe) | Contraction (apostrophe) | Contraction expands to |
|---|---|---|
| its (the dog wagged its tail) | it's | it is |
| your (your name) | you're | you are |
| their (their house) | they're | they are |
| whose (whose idea?) | who's | who is / who has |
Why English Has So Many Homophones
English has an unusually large number of homophones compared to most European languages. The main reasons:
- →Multiple source languages: Old English, Norman French, Latin, and Greek words all kept their original spellings even as they came to be pronounced the same way in English.
- →The Great Vowel Shift (1400–1700): English vowel pronunciation changed dramatically, causing words that once sounded different to converge. See our guide to English spelling history.
- →Loss of grammatical endings: Old English had distinct case endings that made words sound different. As those endings eroded, words that differed only in ending now sound the same.
Principal vs Principle: Not Homophones, But Sound-Alikes
Principal and principle are not technically homophones, they are near-homophones and confusable words, included here because they appear constantly on "most confused words" lists alongside genuine homophones. Principal (ending in -al) means main, primary, or most important; it also refers to the head of a school. Principle (ending in -le) means a fundamental rule, belief, or standard of behavior.
Memory trick: a principAl is a pAl (person or adjective). A principLE is a ruLE (both end in -le). In legal writing, "the principal" refers to the main party in a transaction, while "the principle" refers to a guiding rule or standard. Getting these confused in a contract can change the referent of an entire clause.
To, Too, Two: The Numbers Game
This trio is among the first grammar lessons taught in school, and still appears as a frequent error in adult writing. Each word fills a completely different grammatical role.
To is a preposition indicating direction or a particle introducing an infinitive: "go to school," "to run fast," "hand it to me." It is by far the most frequent of the three in written English.
Too means "also" or "to an excessive degree": "I want some too," "it's too hot." The double-O is a memory hook: too has too many O's, just like the word signals excess. When "too" means "also," it can usually be replaced with "as well" or "also" as a test.
Two is always and only the number 2. Its unusual spelling (with the silent W) is a relic of Old English twegen and Proto-Germanic twai. The W was once pronounced. If you can replace the word with the numeral 2, use "two."
The Expansion Test: Your Fastest Homophone Check
For any contraction-versus-possessive pair, expand the contraction and read the sentence aloud. "It's raining" expands to "It is raining", that works. "The cat licked it's paw" expands to "The cat licked it is paw", that is nonsense, so use "its." This test catches your/you're, their/they're, and whose/who's every time. Also see PlainSpell's most misspelled rankings for data on which homophones cause the most real-world errors.
Passed vs Past: Verb Form or Adjective?
Passed is always a verb form (past tense or past participle of "pass"): "She passed the exam," "He has passed the checkpoint." Past functions as a noun, adjective, adverb, or preposition, but never as a verb: "in the past," "the past week," "drive past the school," "it's half past two."
The test is simple: if you can replace the word with another verb form, use "passed." If you need a noun, adjective, or preposition, use "past." "We past the park" is incorrect because no verb form appears; "we passed the park" is correct. "In the passed" is incorrect because "past" as a noun is needed there.
Browse PlainSpell's 100 most misspelled English words for more on common writing errors, and see the full confusables list for pairs beyond homophones where both words exist but only one fits the context.
Homophone Pairs Across Languages
Other languages have homophones too, though typically fewer. French has particularly many, with entire verb conjugations being homophones: parle, parles, parlent (I speak, you speak, they speak) all sound the same in speech. Spanish has far fewer homophones, only regional variants create them (e.g., vaca/baca in Latin American Spanish).
Homophones by language
Indexed homophone words in each PlainSpell-supported language
- French
French
21,890 homophones
- German 2,859
German
2,859 homophones
- English 2,182
English
2,182 homophones
- Spanish 812
Spanish
812 homophones
- Portuguese 78
Portuguese
78 homophones
PlainSpell covers homophones in all five supported languages. Browse English confusables or explore confusables in French and Spanish.
Related Guides
Frequently Asked Questions
What is a homophone? ▾
A homophone is a word that sounds identical to another word but has a different spelling and meaning. "Their," "there," and "they're" are homophones, pronounced the same but used in completely different contexts.
What are the most commonly confused homophones in English? ▾
Their/there/they're, your/you're, to/too/two, affect/effect (not homophones but similarly confused), its/it's, and then/than. These appear in surveys as the most commonly misused word pairs in written English.
Why does English have so many homophones? ▾
English absorbed vocabulary from Old English, Norman French, Latin, and Greek, each with different spelling conventions. As spoken pronunciation evolved (especially during the Great Vowel Shift in the 15th–17th centuries), words that once sounded different converged on the same sound while keeping their original spellings.
What's the difference between "your" and "you're"? ▾
"Your" is a possessive pronoun (your car, your idea). "You're" is a contraction of "you are" (you're going, you're right). Test: expand "you're" to "you are", if the sentence still makes sense, use "you're." If not, use "your."
Is "affect" or "effect" correct? ▾
"Affect" is usually a verb (the weather affects my mood), "effect" is usually a noun (the effect of the weather). Memory trick: RAVEN, Remember Affect is a Verb, Effect is a Noun. Note: both have secondary uses (affect as a psychological noun, effect as a rare verb meaning "to bring about").
How can I practice using homophones correctly? ▾
The most effective technique is the "expansion test": for contractions, expand them (it's → it is; you're → you are) and see if the sentence still works. For possessives vs contractions, ask "am I showing ownership?" If yes, use the possessive. Reading widely also helps build correct pattern recognition over time.
What to do with this
Homophones are a different trap than misspellings, both spellings are real words, so the fix is context-checking, not spell-checking.
- When stuck between there/their/they're, say the contraction version aloud: "they are bringing they are dog" sounds wrong, so their is correct. The expand-it test works for every contraction homophone. Apostrophe guide
- Homophones and confusables are different traps: homophones sound the same, confusables like affect/effect look similar but are pronounced differently. This guide covers sound-based errors. Confusables guide
- Start with the five most common homophones, there/their/they're, to/too/two, its/it's, your/you're, affect/effect, mastering just these eliminates the majority of homophone errors in everyday writing. Most-misspelled ranking
Sources
- Wiktionary contributors, via kaikki.org (CC BY-SA 3.0)
- Oxford English Dictionary, etymology and pronunciation data
- Merriam-Webster, definitions and usage notes
- The Cambridge Grammar of the English Language, grammatical classifications
Pronunciation equivalence is based on standard American English. Regional accents may distinguish some pairs. "Affect/effect" are near-homophones in some dialects but included here due to high confusion frequency.
