omis·​sion | \ō-ˈmi-shən, ə-\

Definition of omission 

1a : something neglected or left undone There are a few omissions in the list.

b : apathy toward or neglect of duty The police officer was reprimanded for the omission of his duty to inform the suspect of his rights.

2 : the act of omitting : the state of being omitted Her omission from the team was surprising.

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Synonyms for omission


deletion, elision

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Examples of omission in a Sentence

There are a few omissions in the list. the disk contains a selection of deleted scenes, and a couple of the omissions greatly add to the intelligibility of the movie's plot

Recent Examples on the Web

But there’s one big, glaring omission: No songs from Mary Poppins Returns are nominated in the Original Song category. Alissa Wilkinson, Vox, "3 winners and 2 losers from the 2019 Golden Globes nominations," 6 Dec. 2018 To view this video please enable JavaScript, and consider upgrading to a web browser that The Times rounded up some of Trump's other biggest fibs and omissions from his UN speech, especially on matters of international importance. Lucy Diavolo, Teen Vogue, "Donald Trump's UN General Assembly Speech Earned a Laugh From World Leaders," 26 Sep. 2018 Despite those omissions in 2011 and 2012, Walker's administration kept working with Van Den Heuvel and Green Box into 2014. Molly Beck, Milwaukee Journal Sentinel, "Wisconsin jobs agency writes off $1.1 million loan owed by De Pere businessman jailed for defrauding investors," 11 July 2018 Trump’s omission could come down to a tendency to take the education system for granted when there are other, more seemingly pressing concerns such as security and the economy. Isabel Fattal, The Atlantic, "What Trump Didn't Say About Education," 31 Jan. 2018 Intel unveiled its 9th-generation Core desktop chips (after weeks of speculation and leaks), with the notable omission of a key feature: Hyper-Threading, at least on all but the most exclusive Core i9-9900K for mainstream PCs. Mark Hachman, PCWorld, "Intel debuts 9th-generation Core chips, including Core i9 and X-series parts, with a few twists," 8 Oct. 2018 But Jeff believes that parents trust him to broach difficult topics with age-appropriate honesty and compassion, even though his mounting lies by omission are sure to sabotage any chance of reuniting with his estranged wife, Jill (Judy Greer). Jenna Marotta, Vogue, "In Kidding, Jim Carrey Shines in a Familiar Type of Existential Drama," 7 Sep. 2018 Which is, inaccurate and unfair imbalance reporting and also sins of omission. Fox News, "Kellyanne Conway: CNN's bombshell report is just a bomb," 29 Aug. 2018 Hannity is now in the same boat as selective truth tellers Comey and Stephanopoulos, where lack of candor and the sins of omission are the moist currency in our politics. John Kass,, "Comey, Stephanopoulos like Varys and Littlefinger in ‘Game of Thrones’," 17 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'omission.' 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 omission

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

History and Etymology for omission

Middle English omissioun, from Anglo-French omission, from Late Latin omission-, omissio, from Latin omittere

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Statistics for omission

Last Updated

11 Dec 2018

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Time Traveler for omission

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

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More Definitions for omission



English Language Learners Definition of omission

: something that has not been included or done : something that has been omitted

: the act of not including or doing something

: the state of being not included in something


omis·​sion | \ō-ˈmi-shən \

Kids Definition of omission

1 : something left out There are some omissions in the list.

2 : the act of leaving out : the state of being left out I'm sorry for the omission of your name on the list.


omis·​sion | \ō-ˈmi-shən \

Legal Definition of omission 

1 : something neglected, left out, or left undone

2 : the act, fact, or state of leaving something out or failing to do something especially that is required by duty, procedure, or law liable for a criminal act or omission

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More from Merriam-Webster on omission

Rhyming Dictionary: Words that rhyme with omission

Thesaurus: All synonyms and antonyms for omission

Spanish Central: Translation of omission

Nglish: Translation of omission for Spanish Speakers

Britannica English: Translation of omission for Arabic Speakers

Comments on omission

What made you want to look up omission? Please tell us where you read or heard it (including the quote, if possible).


to make faulty or ineffective

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