Depend upon it -- he'll remain incog.
Addison.
In*cog"i*ta*ble (?), a. [L. incogitabilis; pref. in- not + cogitabilis
cogitable.] Not cogitable; inconceivable. Sir T. More.
{ In*cog"i*tance (?), In*cog"i*tan*cy (?), } n. [L. incogitantia.] Want
of thought, or of the power of thinking; thoughtlessness;
unreasonableness.
'T is folly and incogitancy to argue anything, one way or the
other, from the designs of a sort of beings with whom we so little
communicate.
Glanvill.
In*cog"i*tant (?), a. [L. incogitans; pref. in- not + cogitans, p. pr.
of cogitare to think. See Cogitate.] Thoughtless; inconsiderate. [R.]
Milton.
Men are careless and incogitant.
J. Goodman.
In*cog"i*tant*ly, adv. In an incogitant manner.
In*cog"i*ta*tive (?), a. Not cogitative; not thinking; wanting the
power of thought; as, a vegetable is an incogitative being. Locke.
In*cog`i*ta*tiv"i*ty (?), n. The quality of being incogitative; want of
thought or of the power of thinking. Wollaston.