adjective
Synonyms: indefatigable , inexhaustible, tireless, untiring, unweariable, unwearying, weariless
Related Word: constant, steady
Antonyms: flagging
adjective
Synonyms: indefatigable , inexhaustible, tireless, untiring, unweariable, unwearying, weariless
Related Word: constant, steady
Antonyms: flagging
Merriam Webster. Collegiate thesaurus English vocabulary. Английский энциклопедический словарь тезаурус. 2003