verb
make more forceful, powerful
Synonyms: add, add fuel to fire, anneal, ascend, bolster, brace, build up, buttress, confirm, corroborate, empower, enhance, enlarge, establish, extend, fortify, harden, heighten, increase, intensify, invigorate, justify, make firm, mount, multiply, regenerate, reinforce, rejuvenate, renew, restore, rise, set up, sinew, steel, step up, substantiate, support, sustain, temper, tone, tone up, toughen, wax
Antonyms: break down, hurt, weaken
verb
encourage, hearten
Synonyms: animate, back, back up, bear out, bloom, brace, brace up, burgeon, carry weight, cheer, consolidate, embolden, enhearten, enliven, flourish, flower, fortify, gather resources, gird, give weight, harden, inspirit, invigorate, nerve, nourish, prepare, prosper, rally, ready, refresh, rejuvenate, restore, steel, substantiate, temper, thrive, toughen, uphold
Antonyms: discourage, dishearten, dissuade, weaken