ESEN

Which one to use?Beginnernumeral / pronounverb (past tense)

onevswon

'One' is the number 1 or an impersonal pronoun; 'won' is the past tense of 'to win'.

Side-by-side comparison

one

numeral / pronoun

Numeral/pronoun. The number 1. Also an impersonal pronoun equivalent to "you" in general statements.

We only need one more signature to finalize the agreement.
One must always read the fine print before signing.
One of the candidates was significantly more qualified.

won

verb (past tense)

Verb. Simple past tense of "to win": to obtain victory, to gain a prize or competition.

Our team won the regional sales competition last quarter.
She won three awards at the ceremony last night.
They won the contract after a very competitive bidding process.

Common mistake

"We one the game last night" — the verb is won (past of win), not the number one. Or "She won first prize" is correct, but "she won one prize" uses both correctly.

Trick to remember it

'Won' starts with W — the same W as in 'Win'. It won because it won. 'One' starts with O for the shape of the digit 0 — the number that comes right before 1.

Quick rule

Is it the number 1 or the impersonal pronoun? 'One'. Is it the past of to win? 'Won'.

Did you know?

The word 'one' has a mysterious W sound (/wʌn/) that does not appear in the spelling. This happened because Old English speakers began gliding into the vowel with a W sound for ease of pronunciation — but the spelling 'an'/'one' never caught up. This same phonetic drift created 'once' (which also sounds like it starts with W). It is one of English's oldest mismatches between sound and spelling.

Practise what you learned

Exercise 1 · Pick the right one

The startup _____ the pitch competition and secured $500,000 in funding.

Exercise 2 · Pick the right one

There is only _____ ticket left for the event — first come, first served.

Exercise 3 · Form the word

Frequently asked questions

When do I use "one" and when do I use "won"?

Is it the number 1 or the impersonal pronoun? 'One'. Is it the past of to win? 'Won'.

What is the most common mistake with "one" and "won"?

"We one the game last night" — the verb is won (past of win), not the number one. Or "She won first prize" is correct, but "she won one prize" uses both correctly.

How do I remember the difference between "one" and "won"?

'Won' starts with W — the same W as in 'Win'. It won because it won. 'One' starts with O for the shape of the digit 0 — the number that comes right before 1.

Bryan López

Founder of SpeakUP Academy

July 29, 2026

See all word pairs Explore more confusing words

Side-by-side comparison

one

numeral / pronoun

Numeral/pronoun. The number 1. Also an impersonal pronoun equivalent to "you" in general statements.

We only need one more signature to finalize the agreement.
One must always read the fine print before signing.
One of the candidates was significantly more qualified.

won

verb (past tense)

Verb. Simple past tense of "to win": to obtain victory, to gain a prize or competition.

Our team won the regional sales competition last quarter.
She won three awards at the ceremony last night.
They won the contract after a very competitive bidding process.

Practise what you learned

Exercise 1 · Pick the right one

The startup _____ the pitch competition and secured $500,000 in funding.

Exercise 2 · Pick the right one

There is only _____ ticket left for the event — first come, first served.

Exercise 3 · Form the word

Frequently asked questions

When do I use "one" and when do I use "won"?

Is it the number 1 or the impersonal pronoun? 'One'. Is it the past of to win? 'Won'.

What is the most common mistake with "one" and "won"?

"We one the game last night" — the verb is won (past of win), not the number one. Or "She won first prize" is correct, but "she won one prize" uses both correctly.

How do I remember the difference between "one" and "won"?

'Won' starts with W — the same W as in 'Win'. It won because it won. 'One' starts with O for the shape of the digit 0 — the number that comes right before 1.