that'll be the day

Definition of that'll be the day

  1. —used to say that one thinks something will not happen “Do you think he'll ever admit he made a mistake?” “That'll be the day!”

Word by Word Definitions

thatplay
  1. :  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

  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

    : 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

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

    :  so great a :  such

    :  the farther away or less immediately under observation or discussion

  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

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

    :  that which

  1. :  to such an extent

    :  very, extremely

  1. :  the time of light between one night and the next

    :  daylight

    :  daytime


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WORD OF THE DAY

a trip made at another's expense

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