Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

stack up

verb
stacked up; stacking up; stacks up

Definition of stack up

intransitive verb

1 : to add up : total
2 : measure up, compare —usually used with against

Examples of stack up in a Sentence

those newspapers have been stacking up in the basement since we moved here

First Known Use of stack up

1896, in the meaning defined at sense 1

Keep scrolling for more

Learn More about stack up

Statistics for stack up

Look-up Popularity

Time Traveler for stack up

The first known use of stack up was in 1896

See more words from the same year

More from Merriam-Webster on stack up

Rhyming Dictionary: Words that rhyme with stack up

Comments on stack up

What made you want to look up stack up? Please tell us where you read or heard it (including the quote, if possible).

Show Comments  Hide Comments 

WORD OF THE DAY

auxiliary

Listen to the pronounciation of auxiliary

providing supplementary assistance

Get Word of the Day daily email!

Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Syn City

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Words at Play
Ask the Editors
Word Games