Synonyms of strengthened

1 Syllable

steel, wax, add, tone, rise, mount

2 Syllables

support, renew, walled, manned, buttress, harden, temper, toughen, ascend, confirm, brace, heighten, extend, bolster, sustain, anneal, built-up, sinew, rested

3 Syllables

multiply, enhance, bulwarked, fortressed, increase, bastioned, establish, untired, reinforced, restore, justify, fortify, reinforce, fortified, empower, enlarge

4 Syllables

intensify, garrisoned, unfatigued, substantiate, comfortable, loose-fitting

5 Syllables

regenerate, corroborate, rejuvenate, invigorate