GRE gnat Definition A small flying insect that resembles a tiny mosquito. Example "A cloud of gnats hovered over the pond at dusk." Sign in to save GRE Quiz → ← gnarled gnaw → Study tips featuring "gnat" Force Contrast Between Two Similar Words Uncover the Hidden Stories Behind GRE Words Write GRE Words Into Your Own Sentences Related words GRE awe GRE smithereens GRE abacus SAT abase GRE abash GRE abate GRE abbreviate GRE abbreviation SAT abdicate SAT abdomen GRE abduct GRE aberrant