Fifty

/ˈfɪfti/

nounBeginnerVery CommonGeneral

Definitions

2 meanings
1

The cardinal number equal to the product of five and ten.

/ˈfɪfti/

nounneutralBeginner
General

The number 50.

She had fifty dollars in her wallet.

💡 Simply: Fifty is like having five groups of ten things. Think of having fifty cookies—that's a lot!

👶 For kids: Fifty means there are 50 things. Like 50 toys!

More Examples

2

The race was fifty kilometers long.

3

The price of the book was fifty pounds.

How It's Used

Mathematics

"The product of 5 and 10 is fifty."

Measurement

"The distance was fifty miles."

2

Being the number 50 in quantity.

/ˈfɪfti/

adjectiveneutralBeginner
General

Amounting to 50.

Fifty people were invited to the party.

💡 Simply: When something is 'fifty' of something, it means there are 50 of them. Like fifty balloons!

👶 For kids: Fifty means there are 50. Like 50 balls!

More Examples

2

The marathon runners completed fifty kilometers.

3

I have fifty pens in my drawer.

How It's Used

Counting

"Fifty students attended the lecture."

Measurement

"The speed limit was fifty miles per hour."

Tip:Think of a fifty-dollar bill - that's how much the word represents.

From Old English fiftig, from Proto-Germanic *fimf- 'five' + -tig 'ten', related to words for 'five tens' in other Germanic languages. The '-ty' ending indicates a multiple of ten.

The word fifty has been in use since Old English and has consistently represented the cardinal number between forty-nine and fifty-one.

Memory tip

Imagine 50 fingers all on one hand!

Base: five
fivetyfiftififtie

Usage

70%Spoken
30%Written