Source : Webster's Revised Unabridged Dictionary (1913)

Adequate \Ad"e*quate\, a. [L. adaequatus, p. p. of adaequare to
   make equal to; ad + aequare to make equal, aequus equal. See
   {Equal}.]
   Equal to some requirement; proportionate, or correspondent;
   fully sufficient; as, powers adequate to a great work; an
   adequate definition.

         Ireland had no adequate champion.        --De Quincey.

   Syn: Proportionate; commensurate; sufficient; suitable;
        competent; capable.

Adequate \Ad"e*quate\, v. t. [See {Adequate}, a.]
   1. To equalize; to make adequate. [R.] --Fotherby.

   2. To equal. [Obs.]

            It [is] an impossibility for any creature to
            adequate God in his eternity.         --Shelford.

Source : WordNet®

adequate
     adj 1: (sometimes followed by `to') meeting the requirements
            especially of a task; "she had adequate training";
            "her training was adequate"; "she was adequate to the
            job" [ant: {inadequate}]
     2: enough to meet a purpose; "an adequate income"; "the food
        was adequate"; "a decent wage"; "enough food"; "food
        enough" [syn: {decent}, {enough}]
     3: about average; acceptable; "more than adequate as a
        secretary" [syn: {passable}, {fair to middling}]