stultify

Concise Oxford English Dictionary © 2008 Oxford University Press:
stultify /ˈstʌltɪfʌɪ/

▶verb (stultifies, stultifying, stultified)

• 1 (usu. as adj. stultifying) cause to feel bored or enervated.

• 2 cause to appear foolish or absurd.

– derivatives
stultification noun,
stultifier noun,
stultifyingly adverb.

– origin C18: from late L. stultificare, from L. stultus ‘foolish’.