Verb

• S: (v) weaken (lessen the strength of) "The fever weakened his body"
• S: (v) weaken (become weaker) "The prisoner's resistance weakened after seven days"
• S: (v) sabotage, undermine, countermine, counteract, subvert, weaken (destroy property or hinder normal operations) "The Resistance sabotaged railroad operations during the war"
• direct troponym / full troponym
• direct hypernym / inherited hypernym / sister term
• derivationally related form
• W: (n) sabotage [Related to: sabotage] (a deliberate act of destruction or disruption in which equipment is damaged)
• sentence frame
• S: (v) de-escalate, weaken, step down (reduce the level or intensity or size or scope of) "de-escalate a crisis"
• S: (v) dampen, damp, soften, weaken, break (lessen in force or effect) "soften a shock"; "break a fall"

Adjective

• S: (adj) diminished, lessened, vitiated, weakened (impaired by diminution)
• S: (adj) weakened (made weak or weaker)
• similar to
• antonym
• W: (adj) strong [Indirect via weak] (having strength or power greater than average or expected) "a strong radio signal"; "strong medicine"; "a strong man"
• S: (adj) attenuate, attenuated, faded, weakened (reduced in strength) "the faded tones of an old recording"
• S: (adj) cut, thinned, weakened (mixed with water) "sold cut whiskey"; "a cup of thinned soup"
• S: (adj) hurt, weakened (damaged; used of inanimate objects or their value)