ommission

Noun

omission (countable and uncountable, plural omissions)

1. (uncountable) The act of omitting.
   • Scots was not ‘banned’ outright — impossible anyway with so many Scots-speaking teachers but, like Gaelic, marginalised by omission.2023, Clive Young, “chapter three: From Union to Devolution”, in Unlocking Scots: The Secret Life of the Scots Language, Edinburgh: Luath Press Limited, →ISBN, →OCLC, page 88

   Synonyms:

   preterition

2. (uncountable) The act of neglecting to perform an action one has an obligation to do.
   • E&O insurance (for errors and omissions) covers both errors of commission and errors of omission.
3. (countable) An instance of those acts, or the thing left out thereby; something deleted or left out.
   • The suspicious omissions in the new edition of the book attracted claims of censorship.
4. Something not done or neglected.
   • The lack of a sponge count was an omission by the surgical team.
5. The shortening of a word or phrase, using an apostrophe ( ' ) to replace the missing letters, often used to approximate the sound of speech or a specific dialect.