Simple Definition of nebulous
: not clear : difficult to see, understand, describe, etc.
Examples of nebulous in a sentence
These philosophical concepts can be nebulous.
<made nebulous references to some major changes the future may hold>
Did You Know?
Nebulous comes from the Latin word nebulosus, meaning "misty," which in turn comes from nebula, meaning "mist," "fog," or "cloud." In the 18th century, English speakers borrowed "nebula" and gave it a somewhat more specific meaning than the Latin version. In English, "nebula" refers to a cloud of gas or dust in deep space, or in less technical contexts, simply to a galaxy. "Nebulous" itself, when it doesn't have interstellar implications, usually means "cloudy" or "foggy" in a figurative sense. One's memory of a long-past event, for example, will often be nebulous; a teenager might give a nebulous recounting of an evening's events upon coming home; or a politician might make a campaign promise but give only a nebulous description of how he or she would fulfill it.
Origin of nebulous
Latin nebulosus misty, from nebula
First Known Use: 1674
NEBULOUS Defined for Kids
Seen and Heard
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