bug

1 of 4

noun (1)

plural bugs
1
a
: any of an order (Hemiptera and especially its suborder Heteroptera) of insects (such as an assassin bug or chinch bug) that have sucking mouthparts, forewings thickened at the base, and incomplete metamorphosis and are often economic pests

called also true bug

b
: any of various small arthropods (such as a beetle or spider) resembling the true bugs
c
: any of several insects (such as a head louse) commonly considered obnoxious
2
: an unexpected defect, fault, flaw, or imperfection
The software was full of bugs.
3
a
: a microorganism (such as a bacterium or virus) especially when causing illness or disease
b
: an often unspecified or nonspecific sickness presumed to be caused by such a microorganism
a stomach bug
4
: a concealed listening device
5
: a sudden enthusiasm
6
: enthusiast
a camera bug
7
: a prominent person
8
informal + disparaging : a mentally unsound person
9
[from its designation by an asterisk on race programs] : a weight allowance given apprentice jockeys

bug

2 of 4

verb (1)

bugged; bugging

transitive verb

1
: bother, annoy
don't bug me with petty details
2
: to plant a concealed microphone in

intransitive verb

: to lose one's composure : freak
often used with out

bug

3 of 4

verb (2)

bugged; bugging

intransitive verb

of the eyes : protrude, bulge
often used with out

transitive verb

of the eyes : to cause to bug
his eyes were bugged with horror

bug

4 of 4

noun (2)

obsolete

Examples of bug in a Sentence

Noun (1) a camera bug who loves taking candid shots at fairs and festivals I can't go to work today because I've caught some bug that's going around a bug with a fascination for committing arson Verb (1) these incessant phone calls are really starting to bug me I hate to bug you, but could you help me move this table?
Recent Examples on the Web
These examples are automatically compiled from online sources to illustrate current usage. Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Verb
During setup, Tile bugs you to pay for its subscription services, Tile Premium ($3 per month or $30 annually) and Tile Premium Protect ($99 per year). PCMAG, 13 Oct. 2024 Shaw was intrigued by his game cameras and began bugging him to see the footage. CBS News, 12 Oct. 2024
Noun
The tenants complained of bug bites and a growing roach problem. Liam Dillon, Los Angeles Times, 5 Nov. 2024 Open-source partners who also manage and maintain the OSS themselves can fix bugs and issues that their users need to be addressed. Paul Stovell, Forbes, 4 Nov. 2024 See all Example Sentences for bug 

Word History

Etymology

Noun (1)

origin unknown

Verb (2)

probably from bug entry 1

Noun (2)

Middle English bugge hobgoblin; probably akin to Low German bögge goblin

First Known Use

Noun (1)

1594, in the meaning defined at sense 1b

Verb (1)

1935, in the meaning defined at transitive sense 2

Verb (2)

1865, in the meaning defined at transitive sense

Noun (2)

15th century, in the meaning defined above

Time Traveler
The first known use of bug was in the 15th century

Dictionary Entries Near bug

Cite this Entry

“Bug.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bug. Accessed 16 Nov. 2024.

Kids Definition

bug

1 of 2 noun
1
a
: an insect (as a beetle) or other creeping or crawling invertebrate animal (as a centipede)
b
: any of an order of insects (as bedbugs and stinkbugs) that have sucking mouthparts and the forewings part leathery and part membranous and that undergo incomplete metamorphosis

called also true bug

2
: an unexpected mistake or imperfection
a bug in a computer program
3
: a disease-producing germ
also : a disease caused by it
4
: fan entry 3, enthusiast
a camera bug
5
: a concealed listening device

bug

2 of 2 verb
bugged; bugging
1
: to place a concealed microphone in
2
3
: freak entry 3
usually used with out

Medical Definition

bug

noun
1
a
: an insect or other creeping or crawling invertebrate animal (as a spider)
not used technically
b
: any of various insects (as the bedbug or cockroach) commonly considered obnoxious
c
: any of the order Hemiptera and especially of its suborder Heteroptera of insects that have sucking mouthparts, forewings thickened at the base, and that lack a pupal stage between the immature stages and the adult

called also true bug

2
a
: a microorganism (such as a bacterium or virus) especially when causing illness or disease
Enterococcus faecium, an especially nasty bug, often shrugs off even vancomycin, a last-resort antibiotic.Avery Comarow, U.S. News & World Report
b
: an often unspecified or nonspecific sickness presumed to be caused by such a microorganism
a stomach bug
suffering from the flu bug

Legal Definition

bug

transitive verb
bugged; bugging
: to plant a concealed microphone in compare eavesdrop, wiretap

Geographical Definition

Bug

geographical name

1
river over 450 miles (720 kilometers) long in central Europe rising in western Ukraine, forming part of Ukraine–Poland and Poland–Belarus borders, and flowing into the Vistula River in Poland
2
river over 500 miles (805 kilometers) long in southwestern Ukraine flowing southeast to the estuary of the Dnieper River

More from Merriam-Webster on bug

Last Updated: - Definition revised
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