Dictionary.com
Thesaurus.com
Synonyms

gnat

American  
[nat] / næt /

noun

  • gnats
    plural
  1. any of certain small flies, especially the biting gnats or punkies of the family Ceratopogonidae, the midges of the family Chironomidae, and the black flies of the family Simuliidae.

  2. British. mosquito.


idioms

  1. strain at a gnat and swallow a camel, to fuss about trifles while ignoring more serious matters.

gnat British  
/ næt /

noun

  1. any of various small fragile biting dipterous insects of the suborder Nematocera, esp Culex pipiens ( common gnat ), which abounds near stagnant water

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Derived Forms

Inflected Forms

Nouns

Etymology

Origin of gnat

before 900; Middle English; Old English gnæt ( t ); cognate with German (dial.) Gnatze

Explanation

Those tiny black insects swarming around your head just as the sun goes down are probably gnats, very small flies that are extremely annoying but usually don't bite. If those little flying creatures bite you, they're most likely mosquitoes. If they just irritate you, landing on your face and creating a cloud around your head? They're gnats. Although the word comes from a Germanic root related to gnaw and meaning "biting insect," the truth is most gnats just want to fly around, eat plants, and mate. Occasionally they're attracted to the fluids in your eyes, which means you'll have to swat them away.

Keep Reading on Vocabulary.com

Vocabulary lists containing gnat

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The scans revealed three insects: a fungus gnat, a black fly, and an ancient ant.

From Science Daily Jun. 4, 2026

As in both earlier games in this series, the Thunder treated a Lakers lead like a pesky gnat, swatting it away with a casual flick as if it never existed.

From Los Angeles Times May 10, 2026

The novel opens by describing a local gnat infestation that seems to have spread to the writing, because all the words containing “nat” have been given a silent “g,” as in “extermignate” and “gnaturally.”

From The Wall Street Journal Jan. 7, 2026

These are stories I want to invest in, and it's irritating to have the alleged Garlin ickiness buzzing around my cranium like a gnat while I try to do that.

From Salon Jun. 8, 2023

The Gondwannan Ambassador struck the She Elephant with a blast, but she shook it off like a gnat bite.

From "The Ear, the Eye, and the Arm" by Nancy Farmer

“Moths, gnats, and God knows what else,” he’d said in the lead-up.

From The Wall Street Journal Jun. 15, 2026

The summer humidity in Washington often attracts an unpleasant number of insects, and The Weather Channel is reporting that swarms of mosquitoes and gnats may find their way into the cage.

From BBC Jun. 14, 2026

The following fall, Helton stood on the banks of Beautiful Eagle Creek, gnats swirling overhead, wondering if maybe its water really was magic after all.

From Los Angeles Times Sep. 5, 2025

With no screens or cell phones to take our attention, we ‘worked’ outside in the back of a pickup under a shade tree with a big fan that kept the gnats away.

From Salon Jun. 5, 2025

The Scanlan lifeguards doused themselves in pure vanilla to keep the gnats at bay.

From "The Miseducation of Cameron Post" by emily m. danforth

Vocabulary.com logo
by dictionary.com

Dictionary.com's Learning Companion

Go beyond just looking up words.
Remember them forever with VocabTrainer.

Start training