My uncle gave me a nebulous question that couldn't answer.
His last words were nebulous, no one could tell what he really wanted to have in his will.
Her argument was completely nebulous and unsupported by fact.The nebulous glow around the body of a comet is mostly vaporized ices.
The nebulous clouds looked unearthly.
I have decided to clean out my garage next week. - as a verb we are having a clean out at home on the weekend. - as a noun
When I prepare to write a speech, the idea summary will be found in the topic sentence.