| Main Entry: | firm |
| Part of Speech: | adjective |
| Definition: | inflexible |
Synonyms: |
close, close-grained, compact, compressed, concentrated, concrete, condensed, congealed, dense, fine-grained, hard, hardened, heavy, impenetrable, impermeable, impervious, inelastic, jelled, nonporous, refractory, rigid, set, solid, solidified, stiff, sturdy, substantial, thick, tough, unyielding |
Antonyms: |
flexible, loose, slack, soft, supple, weak, yielding |
| Main Entry: | impermeable |
| Part of Speech: | adjective |
| Definition: | impenetrable |
Synonyms: |
airtight, dense, hermetic, impassable, impervious, leak-proof, nonporous, sealed, water-resistant, waterproof, watertight |
| Main Entry: | incompressible |
| Part of Speech: | adjective |
| Definition: | firm |
Synonyms: |
close, close-grained, compact, compressed, concentrated, concrete, condensed, congealed, dense, fine-grained, hard, hardened, heavy*, impenetrable, impermeable, impervious, inelastic, jelled, nonporous, refractory, rigid, set, solid, solidified, stiff, sturdy, substantial, thick, tough*, unyielding |