In`suf*fi"cien*cy (?), n. [L.
insufficientia: cf. F. insuffisance, whence OE.
insuffisance. See Insufficient.]
1. The quality or state of being
insufficient; want of sufficiency; deficiency; inadequateness; as,
the insufficiency of provisions, of an excuse, etc.
The insufficiency of the light of nature is, by
the light of Scripture, . . . fully supplied.
Hooker.
2. Want of power or skill; inability;
incapacity; incompetency; as, the insufficiency of a man for
an office.