Synonyms of reinforced

1 Syllable
strong
2 Syllables
banded, walled, manned, braced, puissant, strongest, backed, stronger, built-up
3 Syllables
bulwarked, bastioned, fortressed, bolstered, assisted, buttressed, augmented, fortified, stiffened, strengthened, thickened
4 Syllables
garrisoned, heavy-duty