Dictionary.com

fifteen

[ fif-teen ]
/ ˈfɪfˈtin /
Save This Word!

noun

a cardinal number, ten plus five.
a symbol for this number, as 15 or XV.
a set of this many persons or things.

adjective

amounting to 15 in number.

QUIZZES

QUIZ YOURSELF ON “ITS” VS. “IT’S”!

Apostrophes can be tricky; prove you know the difference between it’s and its in this crafty quiz!
Question 1 of 12
On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.

Origin of fifteen

before 900; Middle English, Old English fiftene.See five, -teen
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for fifteen (1 of 2)

fifteen
/ (ˈfɪfˈtiːn) /

noun

the cardinal number that is the sum of ten and five
a numeral, 15, XV, etc, representing this number
something represented by, representing, or consisting of 15 units
a rugby union football team

determiner

  1. amounting to fifteenfifteen jokes
  2. (as pronoun)fifteen of us danced
Old English fīftēne

British Dictionary definitions for fifteen (2 of 2)

Fifteen
/ (ˈfɪfˈtiːn) /

noun

the Fifteen British history the Jacobite rising of 1715
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Get Online Help For Kids!