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.

2. To regard as a fool, or as foolish. [R.]

The modern sciolist stultifies all understanding but his own, and that which he conceives like his own.

3. (Law) To allege or prove to be of unsound mind, so that the performance of some act may be avoided.

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.

2. To regard as a fool, or as foolish. [R.]

The modern sciolist stultifies all understanding but his own, and that which he conceives like his own.

3. (Law) To allege or prove to be of unsound mind, so that the performance of some act may be avoided.

• prove to be of unsound mind or demonstrate someone's incompetence
  
• cause to appear foolish
  
• deprive of strength or efficiency; make useless or worthless