nebulous

Meaning

Adjective

• In the form of a cloud or haze; hazy.
• Vague or ill-defined.
• Relating to a nebula or nebulae.

Origin

• From Middle English, from Middle French nebuleus, from Latin nebulōsus ("full of mist, foggy, cloudy"), from nebula, from Proto-Indo-European *nébʰos ("cloud, vapor, fog, moist, sky"). Cognate with Ancient Greek νέφος ("cloud"), Old High German nebul ("cloud, fog") (German Nebel), Old English nifol, neowol. More at neveling, nuel.