Antonyms of verb weaken

2 of 5 senses of weaken

Sense 1
weaken -- (lessen the strength of; "The fever weakened his body")
       Antonym of strengthen (Sense 1)
      => strengthen, beef up, fortify -- (make strong or stronger; "This exercise will strengthen your upper body"; "strengthen the relations between the two countries")

Sense 2
weaken -- (become weaker; "The prisoner's resistance weakened after seven days")
       Antonym of strengthen (Sense 2)
      => strengthen -- (gain strength; "His body strengthened")

Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb weaken

5 senses of weaken

Sense 1
weaken -- (lessen the strength of; "The fever weakened his body")
       => change, alter, modify -- (cause to change; make different; cause a transformation; "The advent of the automobile may have altered the growth pattern of the city"; "The discussion has changed my thinking about the issue")

Sense 2
weaken -- (become weaker; "The prisoner's resistance weakened after seven days")
       => decrease, diminish, lessen, fall -- (decrease in size, extent, or range; "The amount of homework decreased towards the end of the semester"; "The cabin pressure fell dramatically"; "her weight fell to under a hundred pounds"; "his voice fell to a whisper")

Sense 3
sabotage, undermine, countermine, counteract, subvert, weaken -- (destroy property or hinder normal operations; "The Resistance sabotaged railroad operations during the war")
       => disobey -- (refuse to go along with; refuse to follow; be disobedient; "He disobeyed his supervisor and was fired")

Sense 4
de-escalate, weaken, step down -- (reduce the level or intensity or size or scope of; "de-escalate a crisis")
       => decrease, lessen, minify -- (make smaller; "He decreased his staff")

Sense 5
dampen, damp, soften, weaken, break -- (lessen in force or effect; "soften a shock"; "break a fall")
       => deaden, blunt -- (make less lively, intense, or vigorous; impair in vigor, force, activity, or sensation; "Terror blunted her feelings"; "deaden a sound")

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