What is the opposite of weaken?

Need antonyms for weaken? Here's a list of opposite words from our thesaurus that you can use instead.

Verb
Opposite of to become, or cause to become, physically weaker
Verb
Opposite of to reduce, or cause to reduce, in intensity or strength
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Verb
Opposite of to adulterate or dilute the concentration or potency of
Verb
Opposite of to yield or lose one's resolve
Verb
Opposite of to cause damage to, or have a diminishing effect on
Verb
Opposite of to cause to become physically weaker
Verb
Opposite of to spoil or render less pure by adding impurities or other substances
Verb
Opposite of to weaken or lose strength, or to cause this
Verb
Opposite of to lose strength or become weaker
Verb
Opposite of to weaken or deteriorate in physical condition, especially due to illness
Verb
Opposite of to deteriorate or go into decline, especially physically
“The results of your blood tests show that your health is starting to improve.”
Verb
Opposite of to expose to danger or the risk of loss
“You need to secure the perimeter of your network in order to reduce the number of external attacks.”
Verb
Opposite of to stop operating
“You will need some batteries to get that little engine to work.”
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