ogłupić

Etymology
From.

Verb

 * 1)  to dumbify, to duncify, to stupefy
 * 2)  to dumbify oneself, to duncify oneself, to stupefy oneself
 * 1)  to dumbify oneself, to duncify oneself, to stupefy oneself

Usage notes
Only the passive adjectival participle and the verbal noun  are in common use.