am ‧ a ‧ teur ‧ ish /ˈæmətərɪʃ, -tʃʊə-, -tʃə- ˌæməˈtɜːrɪʃ $ ˌæməˈtʊr-, -ˈtɜːr-/ BrE AmE adjective
not skilfully done or made OPP professional :
His paintings are rather amateurish.
—amateurishly adverb
—amateurishness noun [uncountable]
am ‧ a ‧ teur ‧ ish /ˈæmətərɪʃ, -tʃʊə-, -tʃə- ˌæməˈtɜːrɪʃ $ ˌæməˈtʊr-, -ˈtɜːr-/ BrE AmE adjective
not skilfully done or made OPP professional :
His paintings are rather amateurish.
—amateurishly adverb
—amateurishness noun [uncountable]
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012