tępieć

Etymology
From.

Verb

 * 1)  to become stupid, to go daffy, to grow stupid
 * 2)  to become dull, to become blunt
 * 3)  to get weaker due to old age
 * 4)  to become indifferent, to become apathetic
 * 1)  to get weaker due to old age
 * 2)  to become indifferent, to become apathetic
 * 1)  to become indifferent, to become apathetic