Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “weaken”

See all translations

weaken

verb [I or T] uk   /ˈwiː.kən/ us  
C1 to (cause to) become less strong, powerful, or determined: You could see the poor dog weakening daily as the disease spread through its body. Another defeat in parliament would seriously weaken the president's ability to govern. We know that prolonged exposure to vibration can weaken aircraft components. She's weakening - ask her some more questions and see if she confesses.
More examples
(Definition of weaken from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of weaken?
Add Cambridge dictionaries to your browser to your website

Definitions of “weaken” in other dictionaries

Word of the Day

shampoo

a liquid used for washing hair, or for washing particular objects or materials

Word of the Day

The way we move (Verbs for walking and running)

by Kate Woodford,
March 25, 2015
​​​ This week we’re looking at interesting ways to describe the way that people move. Most of the verbs that we’ll be considering describe how fast or slow people move. Others describe the attitude or state of mind of the person walking or running. Some describe both. Starting with verbs for walking slowly,

Read More 

crossfit noun

March 23, 2015
high-intensity strength training Two women in strappy dresses discussed how much weight they could snatch

Read More