adj. Function: adjective
Synonyms: HARD 6, arduous, difficile, effortful, labored, laborious, operose, strenuous, toilsome, uphill
Related Words: problem, problematic
Idioms: easier said than done, no picnic, tough sledding
Antonyms: simple
adj. Function: adjective
Synonyms: HARD 6, arduous, difficile, effortful, labored, laborious, operose, strenuous, toilsome, uphill
Related Words: problem, problematic
Idioms: easier said than done, no picnic, tough sledding
Antonyms: simple
Merriam Webster. Collegiate thesaurus English dictionary. Английский энциклопедический толковый словарь тезауруса. 2012