weaken

“The fever weakened his body”

Types:: show 21 types...; hide 21 types...; de-energise, de-energize
deprive of energy; break
weaken or destroy in spirit or body; devitalise, devitalize
sap of life or energy; shake
undermine or cause to waver; depress
lessen the activity or force of; unbrace
remove a brace or braces from; etiolate
make weak by stunting the growth or development of; cripple, stultify
deprive of strength or efficiency; make useless or worthless; cut, dilute, reduce, thin, thin out
lessen the strength or flavor of a solution or mixture; attenuate, rarefy
weaken the consistency of (a chemical substance); blunt
make less intense; mollify, season, temper
make more temperate, acceptable, or suitable by adding something else; moderate; debilitate, drain, enfeeble
make weak; enervate
weaken mentally or morally; dampen
reduce the amplitude (of oscillations or waves); negate, neutralise, neutralize, nullify
make ineffective by counterbalancing the effect of; castrate, emasculate
deprive of strength or vigor; wash out
deplete of strength or vitality; eviscerate
take away a vital or essential part of; emaciate, macerate, waste
cause to grow thin or weak; water down
make less strong or intense

Type of:: alter, change, modify
cause to change; make different; cause a transformation

Types:: deafen
make soundproof; damp, dampen, deaden
make vague or obscure or make (an image) less visible

Type of:: blunt, deaden
make less lively, intense, or vigorous; impair in vigor, force, activity, or sensation

“The prisoner's resistance weakened after seven days”

Types:: show 17 types...; hide 17 types...; attenuate
become weaker, in strength, value, or magnitude; disappear, evaporate, melt
become less intense and fade away gradually; die down
become progressively weaker; collapse
lose significance, effectiveness, or value; fade, melt
become less clearly visible or distinguishable; disappear gradually or seemingly; lessen, subside
wear off or die down; blur, dim, slur
become vague or indistinct; languish, pine away, waste
lose vigor, health, or flesh, as through grief; dull
make less lively or vigorous; pall
lose strength or effectiveness; become or appear boring, insipid, or tiresome (to); loose, loosen, relax
become loose or looser or less tight; slacken
become looser or slack; slack, slacken, slow, slow down, slow up
become slow or slower; wilt
lose strength; efface, obliterate
remove completely from recognition or memory; cloud
make milky or dull; refine
attenuate or reduce in vigor, strength, or validity by polishing or purifying

Type of:: decrease, diminish, fall, lessen
decrease in size, extent, or range

DEFINITIONS OF: weaken