from
The Collaborative International Dictionary of English v.0.48
Stultify \Stul"ti*fy\, v. t. [imp. & p. p. {Stultified}; p. pr.
& vb. n. {Stultifying}.] [L. stultus foolish + -fy.]
1. To make foolish; to make a fool of; as, to stultify one by
imposition; to stultify one's self by silly reasoning or
conduct. --Burke.
[1913 Webster]
2. To regard as a fool, or as foolish. [R.]
[1913 Webster]
The modern sciolist stultifies all understanding but
his own, and that which he conceives like his own.
--Hazlitt.
[1913 Webster]
3. (Law) To allege or prove to be of unsound mind, so that
the performance of some act may be avoided.
[1913 Webster]