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
An omission is something that has not been included or has not been done, either deliberately or accidentally. The duke was surprised by his wife's omission from the guest list. inclusion
exclusion in an actual message of one or more units of data which are defined as conditional in a message type specification [ISO 9735]
a mistake resulting from neglect neglecting to do something; leaving out or passing over something any process whereby sounds are left out of spoken words or phrases something that has been omitted; "she searched the table for omissions