| Main Entry: | |
| Part of Speech: | verb |
| Definition: | 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 |