mon·​ster | \ ˈmän(t)-stər How to pronounce monster (audio) \

Definition of monster

 (Entry 1 of 2)

1a : an animal or plant of abnormal form or structure a mythical monster a sea monster
b : one who deviates from normal or acceptable behavior or character an immoral monster
2 : a threatening force the same monster—Destiny … that rolls every civilization to doom— W. L. Sullivan
3a : an animal of strange or terrifying shape visualize this scaleless monster, eight or nine feet long, sprawling in the shade by the side of the mud pools— W. E. Swinton
b : one unusually large for its kind That truck is a monster.
4 : something monstrous especially : a person of unnatural or extreme ugliness, deformity, wickedness, or cruelty His father was a monster who beat his children for no reason.
5 : one that is highly successful That movie was a monster at the box office.



Definition of monster (Entry 2 of 2)

: enormous or impressive especially in size, extent, or numbers

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Examples of monster in a Sentence

Noun That car is a monster. Inflation has become an economic monster. Adjective The movie turned out to be a monster hit.
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Recent Examples on the Web: Noun Hunt needed a monster game against the Jets to get back on track, needing 207 yards over his final two games to reach 1,000. Scott Patsko, cleveland, "Browns Winners and Losers in Week 16: Fumbles, feeding a rivalry and follow-up questions," 28 Dec. 2020 After his monster game against the Vikings, Kamara is leading all non-quarterbacks in standard fantasy scoring (295 points), and his 377.8 points in points-per-reception leagues is tops among all NFL players. Luke Johnson,, "Alvin Kamara earned Drew Brees' son Baylen a fantasy football championship," 28 Dec. 2020 Najee Harris has had just one monster game this year — a 5-TD performance against Ole Miss — but is as dominant on a play-per-play basis as any running back in the country and is also a weapon in the passing game. Creg Stephenson |, al, "Iron Bowl 2020 position by position: Who has the edge?," 25 Nov. 2020 Ricky White’s monster game against Michigan showed his talent, and fellow freshmen Montorie Foster and Terry Lockett are not far behind. Chris Solari, Detroit Free Press, "Michigan State football midseason grades: Report card reflects bumpy ride," 25 Nov. 2020 Howard Russell had a monster game for Phoenix Christian in the loss, but River Valley has its go-to guy in running back Zach Bennett. Richard Obert, The Arizona Republic, "Breaking down Arizona high school football 3A play-in games: Who advances?," 19 Nov. 2020 While the monster game of QB Tyler Schuster (257 total yards, two TDs rushing) helped Blaine prevail, a more balanced approach will be needed against Maple Grove's defense. Star Tribune, "Star Tribune prep staff football picks for Week 2," 14 Oct. 2020 Nose tackle Keondre Coburn, who had a monster game with 11 tackles include two for losses, put a finer point on the loss. Chuck Carlton, Dallas News, "'Self-inflicted mistakes’ doom Texas to another failed comeback, 7th loss to TCU in 9 meetings," 3 Oct. 2020 Whatever Brees declares about his physical condition can be proven to some degree with a monster game against Green Bay. Jarrett Bell, USA TODAY, "Opinion: Saints QB Drew Brees has perfect opportunity to prove that he’s not washed up against Packers," 26 Sep. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'monster.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of monster


14th century, in the meaning defined at sense 1a


1837, in the meaning defined above

History and Etymology for monster

Noun and Adjective

Middle English monstre, from Anglo-French, from Latin monstrum omen, monster, from monēre to warn — more at mind

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Time Traveler for monster

Time Traveler

The first known use of monster was in the 14th century

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Statistics for monster

Last Updated

7 Jan 2021

Cite this Entry

“Monster.” Dictionary, Merriam-Webster, Accessed 16 Jan. 2021.

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More Definitions for monster


How to pronounce monster (audio)

English Language Learners Definition of monster

 (Entry 1 of 2)

: a strange or horrible imaginary creature
informal : something that is extremely or unusually large
: a powerful person or thing that cannot be controlled and that causes many problems



English Language Learners Definition of monster (Entry 2 of 2)

informal : very popular and successful


mon·​ster | \ ˈmän-stər How to pronounce monster (audio) \

Kids Definition of monster

1 : a strange or horrible creature
2 : something unusually large
3 : an extremely wicked or cruel person


mon·​ster | \ ˈmän(t)-stər How to pronounce monster (audio) \

Medical Definition of monster

: an animal or plant displaying a major developmental abnormality in form or structure

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Comments on monster

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