Synonyms and Antonyms of strengthen

  1. 1 to increase the ability of (as a muscle) to exert physical force lifting weights every day will eventually strengthen your muscles the army makes new recruits run for miles in order to strengthen them Synonyms beef (up), fortify, harden, toughen Related Words anneal, temper; firm (up), tone (up); energize, invigorate, vitalize; restrengthen Near Antonyms cripple, incapacitate, paralyze; damage, harm, hurt, impair, injure; break down, wear out; sap, undercut, undermine Antonyms debilitate, enervate, enfeeble, weaken

  2. 2 to make able to withstand physical hardship, strain, or exposure required weeks of physical therapy to strengthen his arm enough to pitch for the team again Synonyms fortify, indurate, inure, season, steel, harden, toughenRelated Words acclimate, acclimatize, adapt, adjust; anneal, temper; invigorate, vitalize; immunize; bolster, boost, brace, buttress, enforce, forearm, prop (up), reinforce (also reenforce), support; break in, limber (up), train; accustom, condition, habituate, naturalizeNear Antonyms emasculate, enervate, enfeeble, exhaust, sap, weaken; cripple, debilitate, hamstring, incapacitate; sensitizeAntonyms soften

  3. 3 to make markedly greater in measure or degree encouraged the boarding school students to strengthen their ties with the community by doing public service Synonyms accentuate, amp (up), amplify, beef (up), boost, consolidate, deepen, enhance, heighten, magnify, redouble, step up, intensifyRelated Words broaden, enlarge, expand, extend, lengthen; accelerate, hasten, quicken; emphasize, point (up), sharpen, stress; augment, enforce, reinforce (also reenforce), restrengthen, supplement; maximize; enliven, jazz (up); aggravate, exacerbateNear Antonyms decrease, diminish, lessen, let up (on), reduce, subdue, tone (down), weaken; dwindle, recede, subside, taper (off), wane; alleviate, ease, lightenAntonyms abate, moderate

  4. 4 to prepare (oneself) mentally or emotionally strengthened herself for the moment she'd have to tell her friend that she had lost the borrowed necklace Synonyms brace, forearm, nerve, poise, psych (up), ready, steel, fortifyRelated Words arm; harden, inure, season, toughen; bolster, boost, buoy (up), buttress, enforce, prop (up), reinforce (also reenforce), support, sustain; cheer (up), comfort, embolden, encourage, hearten, inspire; rally, rouse, stirNear Antonyms daunt, demoralize, discourage, dishearten, dispirit, psych (out), shake, unnerve; debilitate, enervate, enfeeble, prostrate, sap, soften, tire, undercut, undermine, weaken

  5. 5 to make more harsh, uncompromising, or severe a bill was introduced to strengthen punishments for hate crimes Synonyms harden, stiffen, harshen, toughenNear Antonyms lessen, moderate, softenAntonyms ameliorate, ease

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