stack up

verb

stacked up; stacking up; stacks up

intransitive verb

1

: to add up

Cars were beginning to stack up behind the bus.

2

: to be in a particular state or situation

Here's how things stack up today.

3

: measure up, compare

—usually used with against

How does he stack up against the other job candidates?

Synonyms of stack up

• compare (with)
• measure up (to)

Examples of stack up in a Sentence

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

Recent Examples on the Web

The problems treating people with mental health challenges were not as visible but stacked up in ways that experts said added mental distress and could contribute to more suicide attempts. — Perla Trevizo, ProPublica, 3 July 2026

With him in the fold, Imai is smiling more on the mound, stacking up strikeouts and carrying himself with confidence not seen during a trying first two months in the major leagues. — Chandler Rome, New York Times, 1 July 2026

Many builders and developers are simply struggling to make projects stack up. — Jennifer Castenson, Forbes.com, 29 June 2026

For stargazers who have dipped their toes into the world of binoculars and telescopes, prices stack up quickly and even one purchase can wipe out thousands of dollars. — Harry Bennett, Space.com, 26 June 2026

Word History

First Known Use

1896, in the meaning defined at sense 1

Rhymes for stack up

• backup
• blowup
• breakup
• buildup
• checkup
• cleanup
• holdup
• hookup
• lineup
• lockup
• makeup
• markup

Kids Definition

stack up

verb

: measure up sense 2, compare

see how you stack up against the champion