Definitions

fill up

[fil-uhp] / ˈfɪlˌʌp /

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brim v.
fuel v.
heap v.
recruit v.
supplement v.

VERB

brim

Synonyms

STRONGEST

fill overflow swell teem

STRONG

spill

WEAK

hold no more run over well over

VERB

fuel

Synonyms

STRONGEST

feed incite inflame sustain

STRONG

charge fan fire gas nourish service supply

WEAK

fill 'er up gas up stoke up tank up

Antonyms

WEAK

de-energize deplete discourage unfuel

VERB

heap

Synonyms

STRONGEST

concentrate dump stack

STRONG

accumulate add arrange augment bank bunch deposit fill gather group hoard increase load lump mass mound pack stockpile store swell

Antonyms

STRONG

decrease deplete diminish disperse distribute divide lessen lose mix up scatter separate spend spread squander subtract use waste

VERB

recruit

Synonyms

STRONGEST

call up draft engage enlist enroll improve mobilize raise round up select

STRONG

augment better deliver gain impress induct levy muster obtain procure proselytize reanimate recoup recover recuperate refresh regain reinforce renew repair replenish repossess restore retrieve revive strengthen supply

WEAK

build up call to arms find human resources sign on sign up store up take in take on win over

Antonyms

STRONGEST

avoid cancel decline decrease diminish dismiss dodge ignore neglect refuse reject shun stop

STRONG

break damage destroy deteriorate forfeit hurt kill lose miss ruin waste weaken worsen

VERB

supplement

Synonyms

STRONGEST

augment build up buttress complement enhance enrich fill out fortify improve reinforce strengthen subsidize

STRONG

complete extend increase pad supply top

WEAK

add fuel to fire beef up heat up jazz up punch up step up

Antonyms

STRONGEST

decrease discourage dissuade hurt injure let down reduce take away weaken worsen

STRONG

lose lower

WEAK

subtract

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.

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fill up

Americans paid more to fill up their cars and to fly on planes.

From MarketWatch ● Nov. 12, 2026

In Los Angeles, rent takes a huge bite out of a student budget, and the price of gasoline seems to climb every time I fill up.

From The Wall Street Journal ● Nov. 10, 2026

While Mexico and other Latin American countries traditionally celebrate on Nov. 1 and Nov. 2, a litany of Día de los Muertos festivities fill up the Southern California calendar beginning in early October.

From Los Angeles Times ● Oct. 29, 2026

"My main thought was that petrol would run out at the petrol stations and I'd better fill up."

From Barron's ● Oct. 18, 2026

But I feel this big well of guilt fill up my gut.

From "Free Lunch" by Rex Ogle

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