neb·u·lous (něb'yə-ləs) adj. Cloudy, misty, or hazy. Lacking definite form or limits; vague: nebulous assurances of future cooperation. Of, relating to, or characteristic of a nebula.
[Middle English, from Latin nebulōsus, from nebula, cloud; see nebh- in Indo-European roots.] neb'u·lous·ly adv., neb'u·lous·ness n. |