that's it

idiom
Updated on: 15 Nov 2017

Definition of that's it

informal
1 used to say that something is finished or completed
  • Okay, that's it. You can go now.
2 used to say that something is all that is needed or wanted
  • I came here just to visit the museum and that's it.
3 used to say that something is correct
  • "I can't remember his name." "I think it was Brian Johnson." "Yes, that's it."
4 used in an angry or annoyed way to say that one will not accept any more of something
  • That's it! No more horseplay in the house.!

Word by Word Definitions

that play
  1. : the person, thing, or idea indicated, mentioned, or understood from the situation

  2. : the time, action, or event specified

  3. : the kind or thing specified as follows

  1. used as a function word to introduce a noun clause that is usually the subject or object of a verb or a predicate nominative

  2. used as a function word to introduce a subordinate clause that is anticipated by the expletive it occurring as subject of the verb

  3. used as a function word to introduce a subordinate clause that is joined as complement to a noun or adjective

  1. : being the person, thing, or idea specified, mentioned, or understood

  2. : being the one specified

  3. : so great a : such

  1. used as a function word to introduce a restrictive relative clause and to serve as a substitute within that clause for the substantive modified by the clause

  2. : at which : in which : on which : by which : with which : to which

  3. : according to what : to the extent of what

  1. : to such an extent

  2. : very, extremely


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