Definitions

weaken

[wee-kuhn] / ˈwi kən /

VERB

reduce the strength of

Synonyms

STRONGEST

abate decline decrease depress dilute diminish dwindle halt impair lessen lower reduce sap soften undermine wane

STRONG

adulterate crumble cut debase debilitate devitalize droop enervate exhaust fade fail faint flag impoverish invalidate languish limp lose minimize mitigate moderate relapse relax temper thin tire totter tremble vitiate wilt

WEAK

break up ease up give way lose spirit slow down thin out water down

Antonyms

STRONGEST

aid assist compliment develop encourage enlarge expand extend grow help increase praise prolong raise rise strengthen

STRONG

achieve activate aggravate agitate animate clean energize enhance excite free improve incite invigorate purify refresh succeed win

WEAK

build up

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.

Of course, any prime minister publicly advertising the point in the future they would consider to be the moment to give up would instantly weaken themselves further.

From BBC • Jun. 13, 2026

The researchers propose that aging or injury can weaken the blood-brain barrier, allowing immune cells from the bloodstream to enter the brain.

From Science Daily • Jun. 12, 2026

Momentum is set to weaken further in the second quarter and third and fourth quarter growth could also remain sluggish, it adds.

From The Wall Street Journal • Jun. 11, 2026

During El Nino, trade winds weaken and atmospheric patterns shift across the tropical Pacific, allowing warm waters around Indonesia to spread eastward toward South America.

From Barron's • Jun. 11, 2026

It seemed just when the prosecution began to present a strong case against him, his dream team displayed something else to weaken their evidence, and softened the hearts of the jury.

From "The Freedom Writers Diary" by The Freedom Writers

weaken

Example Sentences

Related Words