What is another word for strengthen?

Need synonyms for strengthen? Here's a list of words from our thesaurus that you can use instead.

Verb
To make able to withstand physical hardship, strain, or exposure
“The experience would strengthen his determination to help bring reform to a fractured health-care system.”
Verb
To consolidate or reinforce, especially of an opinion or feeling
“The latest incident would strengthen his belief that everyone in the other group was a bad person.”
Verb
To give strength to on a physiological level
“Exercise has been shown to strengthen growing bones and the muscles that support them.”
Verb
To reinforce, especially by addition or augmentation
“Subsequent dynasties continued to strengthen the wall, but this was not enough to prevent the Mongols from invading China.”
Verb
To gain in strength or intensity
“The state-of-the-art weather predictor suggested that the wind would strengthen in the early hours of the night.”
Verb
To scale up
“The organization would strengthen its efforts to expand its reach.”
Verb
To strengthen or toughen a material by heat treatment
“When you start to strengthen the glass, make sure that the inner temperature is low.”
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