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omission

If you make an omission, you leave something out. If you are a restaurant reviewer and you give a glowing review to a new restaurant but fail to mention that you own half of it, that's a significant omission.

The noun omission comes from the verb, omit, which means to leave out. Omissions can be purposeful or a result of neglect. Was the omission of Aunt Suzy from your wedding invitation something you meant to do, or an accident? If you're cleaning the house but don't take out the garbage, you'll regret your omission when the garbage is stinking up the kitchen.

Definitions of omission
  1. noun
    neglecting to do something; leaving out or passing over something
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    types:
    inadvertence, oversight
    an unintentional omission resulting from failure to notice something
    pretermission
    letting pass without notice
    elision, exception, exclusion
    a deliberate act of omission
    type of:
    disregard, neglect
    lack of attention and due care
  2. noun
    something that has been omitted
    “she searched the table for omissions
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    type of:
    disuse, neglect
    the state of something that has been unused and neglected
  3. noun
    a mistake resulting from neglect
    synonyms: skip
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    types:
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    failure
    an unexpected omission
    dashing hopes, disappointment
    an act (or failure to act) that disappoints someone
    breach
    a failure to perform some promised act or obligation
    copout
    a failure to face some difficulty squarely
    type of:
    error, fault, mistake
    a wrong action attributable to bad judgment or ignorance or inattention
  4. noun
    any process whereby sounds or words are left out of spoken words or phrases
    synonyms: deletion
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    types:
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    aphaeresis, apheresis
    (linguistics) omission at the beginning of a word as in `coon' for `raccoon' or `till' for `until'
    aphesis
    the gradual disappearance of an initial (usually unstressed) vowel or syllable as in `squire' for `esquire'
    elision
    omission of a sound between two words (usually a vowel and the end of one word or the beginning of the next)
    eclipsis, ellipsis
    omission or suppression of parts of words or sentences
    type of:
    linguistic process
    a process involved in human language
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