I. adjective
1.
Synonyms: firm 2, hard
Related Word: compacted, concentrated, consolidated
Contrasted words: spongy; disintegrated; fluid, liquid
2.
Synonyms: stable 4, firm, secure, sound
3.
Synonyms: valid , cogent, convincing, satisfactory, satisfying, sound, telling
Related Word: firm, hard
Antonyms: insubstantial
4.
Synonyms: unanimous , consentaneous, consentient
II. adverb
Synonyms: hard 9, firmly, hardly, solidly