Definition of that's itinformal
- Okay, that's it. You can go now.
- I came here just to visit the museum and that's it.
- "I can't remember his name." "I think it was Brian Johnson." "Yes, that's it."
- That's it! No more horseplay in the house.!
: the person, thing, or idea indicated, mentioned, or understood from the situation
: the time, action, or event specified
: the kind or thing specified as follows
used as a function word to introduce a noun clause that is usually the subject or object of a verb or a predicate nominative
used as a function word to introduce a subordinate clause that is anticipated by the expletive it occurring as subject of the verb
used as a function word to introduce a subordinate clause that is joined as complement to a noun or adjective
: being the person, thing, or idea specified, mentioned, or understood
: being the one specified
: so great a : such
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
: at which : in which : on which : by which : with which : to which
: according to what : to the extent of what
: to such an extent
: very, extremely
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