adverb
1.
Synonyms: hard 3, assiduously, dingdong, exhaustively, intensely, intensively, painstakingly, thoroughly, unremittingly
Related Word: seriously, soberly, solemnly, thoughtfully; zealously
2.
Synonyms: seriously 1, actively, down, for real
adverb
1.
Synonyms: hard 3, assiduously, dingdong, exhaustively, intensely, intensively, painstakingly, thoroughly, unremittingly
Related Word: seriously, soberly, solemnly, thoughtfully; zealously
2.
Synonyms: seriously 1, actively, down, for real
Merriam Webster. Collegiate thesaurus English vocabulary. Английский энциклопедический словарь тезаурус. 2003