solid

Synonyms: brick wall close compact compacted concentrated concrete consolidated dense firm fixed heavy hefty hulk hunk husky massed material physical rock rocklike rooted secure set sound stable strong sturdy substantial thick tight unshakable

Antonyms: fluid gaseous insubstantial liquid soft vaporous

Synonyms: agreed brick wall consecutive consentient continued firm like a rock regular set in stone stable steady unalloyed unanimous unbroken undivided uninterrupted united unmixed

Antonyms: broken divided incomplete incontinuous intermittent

Synonyms: cogent constant decent estimable genuine good law-abiding levelheaded pure real satisfactory satisfying sensible serious sober sound stalwart steadfast trustworthy trusty upright upstanding valid worthy

Antonyms: tenuous undependable unreliable untrustworthy vulnerable