Source : Webster's Revised Unabridged Dictionary (1913)

Inadequate \In*ad"e*quate\, a. [Pref. in- not + adequate: cf. F.
   inad['e]quat.]
   Not adequate; unequal to the purpose; insufficient;
   deficient; as, inadequate resources, power, conceptions,
   representations, etc. --Dryden. -- {In*ad"e*quate*ly}, adv.
   -- {In*ad"e*quate*ness}, n.

Source : WordNet®

inadequate
     adj 1: (sometimes followed by `to') not meeting the requirements
            especially of a task; "inadequate training"; "the
            staff was inadequate"; "she was inadequate to the job"
            [ant: {adequate}]
     2: not sufficient to meet a need; "an inadequate income"; "a
        poor salary"; "money is short"; "on short rations"; "food
        is in short supply"; "short on experience" [syn: {poor}, {short}]