Meaning of “nebulous” in the English Dictionary

"nebulous" in British English

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nebulousadjective

uk /ˈneb.jə.ləs/ us /ˈneb.jə.ləs/

(Definition of “nebulous” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"nebulous" in American English

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nebulousadjective

us /ˈneb·jə·ləs/

(esp. of ideas) unclear and lacking form; vague:

a nebulous concept

(Definition of “nebulous” from the Cambridge Academic Content Dictionary © Cambridge University Press)