STRENGTHEN

v. 1 reinforce, renew, bolster, fortify, support, confirm, corroborate, substantiate, buttress, step up, boost A thousand troops were sent to strengthen the garrison at Fort Old 2 encourage, hearten, invigorate, fortify, rejuvenate, nourish, energize, vitalize, toughen, brace (up), steel, innervate, stiffen Whatever she said seems to have strengthened his determination to succeed