Synonyms of brick-wall

1 Syllable
set, firm, tough, strong, sure, stout, calm, staunch, sound, fast
2 Syllables
even, steadiest, stalwart, lasting, steadier, steadfast, stablest, nailed, poised, well-built, stringent, stabler, solid, sturdy, steady, safe
3 Syllables
enduring, reliable, durable, deep-rooted, uniform, unvarying, equable, well-founded, abiding, secure, together, substantial, permanent, stabile, balanced, anchored
4 Syllables
immutable, invariable, unrelenting, unwavering, resolute, stationary, unchangeable, unfluctuating, perdurable, established
5 Syllables
unalterable, uncompromising