adjective
1.
Synonyms: rocky 1, rockbound
2.
Synonyms: inflexible 2, adamant, brassbound, inexorable, obdurate, rigid, single-minded, unbending, uncompromising, unyielding
adjective
1.
Synonyms: rocky 1, rockbound
2.
Synonyms: inflexible 2, adamant, brassbound, inexorable, obdurate, rigid, single-minded, unbending, uncompromising, unyielding
Merriam Webster. Collegiate thesaurus English vocabulary. Английский энциклопедический словарь тезаурус. 2003