Another word for weaken
To become weaker
lessen, lose, decrease, relapse, soften, relax, droop, fail, wane, crumble, halt, limp, languish, fade, decline, abate, totter, tremble, flag, faint, wilt, lose spirit, become disheartened, fail in courage, slow down, break up, crack up*, wash out*.
To make weaker
reduce, minimize, enervate, debilitate, exhaust, cripple, unman, emasculate, castrate, devitalize, undermine, impair, sap, enfeeble, unnerve, incapacitate, impoverish, thin, dilute, take the wind out of*, wash up*; see also decrease 2.
weaken, the most general of these words, implies a lessening of strength, power, soundness, etc. weakened by disease, to weaken an argument; debilitate suggests a partial or temporary gradual weakening, as by disease or dissipation debilitated by alcoholic excesses; enervate implies a lessening of force, vigor, energy, etc., as through indulgence in luxury enervated by idleness; undermine and sap both suggest a weakening or impairing by subtle or stealthy means authority undermined by rumors, strength sapped by disease
Another word for weakenverb
To lose strength or power:decline, degenerate, deteriorate, fade, fail, flag2, languish, sink, wane, waste (away). (Informal) fizzle (out). Idioms: go downhill, hit the skids. See increase, strong
To lessen or deplete the nerve, energy, or strength of:attenuate, debilitate, devitalize, enervate, enfeeble, sap2, undermine, undo, unnerve. See strong
To lessen the strength of by or as if by admixture:attenuate, cut, dilute, thin, water (down). See strong
To moderate or change a position or course of action as a result of pressure:ease off, relent, slacken, soften, yield. Idiom: give way (or ground). See strong