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 law makes any health care professional immune from civil liability for the death of or injury to any individual or any damages caused by actions or omissions. —Madeline Heim, jsonline.com, 21 Nov. 2025

That omission now sits at the center of Abrego’s legal battle. —Robert Alexander, MSNBC Newsweek, 21 Nov. 2025

One big omission is Yoshi, Mario’s longtime dinosaur pal and ridable mount — although the character rarely has speaking lines in the games. —Christopher Cruz, Rolling Stone, 12 Nov. 2025

But there were obvious omissions; people with military headstones — the type engraved with a name, a branch and a war fought — weren’t on the list. —Mark Dee, Idaho Statesman, 11 Nov. 2025

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