STACK (UP) Synonyms: 19 Similar and Opposite Words

stack (up)

verb

Definition of stack (up)

as in to accumulate

to gradually form into a layer, pile, or mass those newspapers have been stacking up in the basement since we moved here

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

Example Sentences

Recent Examples of Synonyms for stack (up)

Verb

Someone else may find something that points in a different direction, and eventually, as research accumulates, a consensus will be formed.

— Laura Paddison, CNN Money, 25 July 2026
These chemicals, which can accumulate in human bodies and cause cancer, are so widespread across consumer products that they can be found from a pair of yoga pants to non-stick cooking pans.

— Roy Stephen Canivel, Footwear News, 24 July 2026

Definition of accumulate

Verb

Finally, the third recruits seaweed to gather minerals that are otherwise too dilute to chase.

— New Atlas, New Atlas, 27 July 2026
Uptown’s First Ward Park became a scene of resistance Saturday evening when about 75 people gathered to mourn two men who were fatally shot by ICE this month.

— Noah Vinsky July 25, Charlotte Observer, 26 July 2026

Definition of gather

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Cite this Entry

Style

“Stack (up).” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/stack%20%28up%29. Accessed 30 Jul. 2026.

Copy Citation

Synonyms of stack (up)

verb

Example Sentences

Browse Nearby Words

Cite this Entry

More from Merriam-Webster

Word of the Day

sultry

Popular in Grammar & Usage

7 Pairs of Commonly Confused Words

Merriam-Webster’s Great Big List of Words You Love to Hate

Is it 'nerve-racking' or 'nerve-wracking'?

Why does English have so many silent letters?

Your vs. You're: How to Use Them Correctly

Popular in Wordplay

Dutch Treat and French Leave: Eight Place-Based Compounds

14 Phobias You Probably Haven't Heard Of

The Longest Long Words List

Even More Bird Names that Sound Like Insults (and Sometimes Are)

12 Lovely and Unusual Words for the Natural World

Popular

7 Pairs of Commonly Confused Words

Dutch Treat and French Leave: Eight Place-Based Compounds

14 Phobias You Probably Haven't Heard Of

Games & Quizzes