nebulous
adjective uk/ˈneb.jə.ləs/ us/ˈneb.jə.ləs/
（尤指想法）模糊不清的，含糊的
(especially of ideas) not clear and having no form
She has a few nebulous ideas about what she might want to do in the future, but nothing definite. 她对自己将来要做什么有些模糊的想法，但都不确定。