Synonyms of firms

1 Syllable

set, hard, stiff, tough, thick

2 Syllables

heavy, compact, dense, jelled, rigid, solid, sturdy, close

3 Syllables

impervious, unyielding, congealed, hardened, concrete, fine-grained, nonporous, condensed, compressed, substantial

4 Syllables

solidified, concentrated, inelastic, close-grained, impermeable, refractory

5 Syllables

impenetrable