omission

noun5

1. •
   The act of omitting.

   • Scots was not ‘banned’ outright — impossible anyway with so many Scots-speaking teachers but, like Gaelic, marginalised by omission. — 2023
2. •
   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.
3. •
   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.
4. •
   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.
5. •
   Something not done or neglected.

   • The lack of a sponge count was an omission by the surgical team.