nebulous

Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++neb·u·lous /ˈnebjələs/ adjective formal 1 CLEAR/EASY TO UNDERSTAND#an idea that is nebulous is not at all clear or exact 模糊不清的，含糊的 SYN vague ‘Normality’ is a rather nebulous concept. “常态”是个非常含糊的概念。2 CLEAR/EASY TO SEE#a shape that is nebulous is unclear and has no definite edges 朦胧的，轮廓不清的 a nebulous ghostly figure 幽灵般朦胧的身影

Examples from the Corpus

nebulous• A nebulous collective leadership, including the chiefs of the powerful armed forces, may still be holding the balance of power.• There is no doubt that the old rating system was based on the nebulous concept of a fair market rent.• Statistics grapples with the quantification of such nebulous concepts as probability, certainty and error.• Rationalism of this kind has encouraged the growth of more and more nebulous deism.• What results, though, is not a nebulous diffusion of Spenserian energies, but their reinforcement.• As indicated earlier, it is one of the most nebulous terms in the vocabulary of politics.• The rules are too nebulous to be applied consistently.