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Dictionary.com
Definitions

build up

VERB
amplify, advertise
Synonyms
STRONGEST
add to boost develop enhance expand fortify improve increase intensify promote reinforce strengthen
WEAK
extend heighten hype plug publicize puff spotlight
Antonyms
STRONGEST
decrease diminish discourage dissuade hurt injure lessen lower subtract undermine weaken worsen
WEAK
play down

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

I want to build up my emergency savings while raising my deductible.

From MarketWatch • Apr. 21, 2026

Some glaciers have thinned so much that they may no longer be able to build up enough ice to surge again.

From Science Daily • Apr. 17, 2026

The supposed environmental concern is that the chemicals could build up in drinking water and soil, which could affect the food supply.

From The Wall Street Journal • Apr. 15, 2026

OpenAI has been trying to build up its Claude Code competitor, Codex, and sees a window of opportunity in Anthropic’s quandary.

From Slate • Apr. 14, 2026

“See? Like you’ve even had a chance to build up your own strength?”

From "The Running Dream" by Wendelin Van Draanen