hazy; vague; unclear
At eighteen, my ideas about what I wanted to do with my life were still nebulous.
nebula (mist, vapor, fog, smoke) (Latin)
nebulous, opaque, turbid
Nebula the milky way in galaxy which is cloudy and unclear nimbu ras in your eyes makes your vision hazy nebulous comes from nibu (lemon). Nimbu water is hazy so v can correlate