weaken

verb

weak·​en ˈwē-kən 

weakened; weakening

ˈwēk-niŋ,

ˈwē-kə-  ; weakens

transitive verb

1

: to make weak : lessen the strength of

2

: to reduce in intensity or effectiveness

intransitive verb

: to become weak

weakener

ˈwēk-nər

ˈwē-kə- 

noun

Synonyms

• debilitate
• devitalize
• enervate
• enfeeble
• etiolate
• prostrate
• sap
• soften
• tire
• waste

Choose the Right Synonym for weaken

weaken, enfeeble, debilitate, undermine, sap, disable mean to lose or cause to lose strength or vigor.

weaken may imply loss of physical strength, health, soundness, or stability or of quality, intensity, or effective power.

a disease that weakens the body's defenses

enfeeble implies a condition of marked weakness and helplessness.

enfeebled by starvation

debilitate suggests a less marked or more temporary impairment of strength or vitality.

the debilitating effects of surgery

undermine and sap suggest a weakening by something working surreptitiously and insidiously.

a poor diet undermines your health

drugs had sapped his ability to think

disable suggests bringing about impairment or limitation in a physical or mental ability.

disabled by an injury sustained at work

Examples of weaken in a Sentence

The disease weakens the immune system.

Some are concerned that the increase in taxes will weaken the economy.

The beams had been weakened by water damage.

efforts to weaken environmental laws

The recent setbacks have not weakened our resolve.

These kinds of contradictions weaken your argument.

The disease causes the immune system to weaken.

The dollar has continued to weaken against the euro.

Lower interest rates have weakened the dollar.

Recent Examples on the Web

Such a test would be a sign of China’s weakening influence over Pyongyang and could spur Seoul to try to acquire nuclear weapons of its own—a position that both South Korea and the United States officially oppose but is gaining traction in Western policy circles. —Sungmin Cho, Foreign Affairs, 12 Nov. 2024

With its climate leadership perceived to be weakening, New Zealand may get a cooler reception at COP than in previous years, especially from Pacific Island nations, Cooper said. —Mahalia Dobson, NBC News, 10 Nov. 2024

Just two days after Election Day, the Federal Reserve is set to announce its next interest rate decision, the first since officials cut interest rates by half of a percentage point and since unemployment data revealed a weakening labor market. —Nicole Goodkind, CNN, 5 Nov. 2024

Many remember the double-digit inflation spikes of the 1970s, fueled by government spending, an oil crisis and a weakening dollar after the collapse of Bretton Woods. —Frank Holmes, Forbes, 5 Nov. 2024

Word History

First Known Use

circa 1529, in the meaning defined at transitive sense 1

Kids Definition

weaken

verb

weak·​en ˈwē-kən 

weakened; weakening ˈwēk-(ə-)niŋ 

: to make or become weak or weaker