What Is a Oner in Money?
A 'oner' usually means £100 in British slang. It can occasionally mean £1, so the amount depends on context.
Also spelled 'oncer', the word comes from "one", and the surrounding conversation tells you which value is meant.
At a glance
- A oner (main)
- £100
- A oner (sometimes)
- £1
- Also spelled
- Oncer
- Comes from
- The word 'one'
Key Takeaways
- A oner most often means £100 in everyday British slang.
- It can also mean £1, so context decides which amount is meant.
- It is also spelled "oncer", with the same meanings.
- The word simply comes from "one", standing for a single note or unit.
What Does 'Oner' Mean?
In its most common use, a oner is £100. So "he owes me a oner" usually means £100.
The word can also mean a single pound, especially in older usage. When the amount is small and everyday, "a oner" may mean £1.
Because it has two possible values, listeners rely on context to work out which is meant.
Where Does 'Oner' Come From?
The word is built straight from "one". A oner is "one" of something, whether one hundred pounds or one pound.
The "oncer" spelling reflects the same idea and is often used specifically for a single note. Both forms have been in British slang for many years.
How People Use 'Oner'
You will hear it with debts, prices, and round sums.
For example: "That'll set you back a oner" points to £100 in most modern use. If the setting clearly involves pennies and pounds, it may mean £1 instead.
A Oner Versus Other £100 Slang
A oner shares the £100 meaning with a ton. "Ton" is the more widely understood word for £100.
For nearby amounts, a score is £20 and a monkey is £500. See our Cockney slang for money guide for the full set.
Frequently Asked Questions
Does a oner mean £100 or £1?
Usually £100. It can mean £1 in some contexts, so the surrounding conversation is your guide.
Is "oner" the same as "oncer"?
They are variants of the same word. "Oncer" is often used for a single note, while both can mean £100 or £1.
Is a oner the same as a ton?
When it means £100, yes. "Ton" is the clearer, more common word for £100.
Where does the word come from?
It comes directly from "one", standing in for a single unit, whether that unit is a pound or a hundred pounds.
A light guide to British money slang.
More money slang explained: Pony · Monkey · Score · Ton · Bag · Carpet · Nicker · Grand · Quid · Cockney slang for money
