Inadequate

In*ad"e*quate (?), a. [Pref. in- not + adequate: cf. F. inadéquat.] 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.