nebulous
adjective /ˈnebjələs/
/ˈnebjələs/
(formal)- not clear
synonym vague模糊的;不清楚的 - a nebulous concept
模糊的概念
Collocations DictionaryNebulous is used with these nouns:- concept
词源late Middle English (in the sense ‘cloudy’): from French nébuleux or Latin nebulosus, from nebula ‘mist’. The current sense dates from the early 19th cent. - a nebulous concept