omission

noun

omis·​sion ō-ˈmi-shən 

ə-

1

a

: 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.

Synonyms of omission

• deletion

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

The most glaring omission for SmoqeX is the lack of an app. —New Atlas, 20 Feb. 2026

This approach is a reversal of a long tradition of planning in San Diego based on accommodating growth where public facilities were available or would become available as growth occurred; with a notable, tragic omission. —Nico Calavita, San Diego Union-Tribune, 17 Feb. 2026

Lastly, some members of the mainstream media’s reports on the violent anti-ICE protests in Minneapolis have been draped in gross mischaracterizations and gaping omissions. —Michael Zais, The Orlando Sentinel, 15 Feb. 2026

One omission in the public longevity discourse is how central cancer is to the aging story. —Gilberto Lopes, STAT, 12 Feb. 2026

Word History

Etymology

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

First Known Use

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

Rhymes for omission

• addition
• admission
• ambition
• attrition
• audition
• clinician
• cognition
• coition
• commission
• condition
• contrition
• dentition

Kids Definition

omission

noun

omis·​sion ō-ˈmish-ən 

ə-

1

: something omitted

2

: the act of omitting : the state of being omitted

Legal Definition

omission

noun

omis·​sion ō-ˈmi-shən 

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