hĕbĕtātĭo — Lewis & Short
hĕbĕtātĭo, ōnis, f.hebeto,
I dulness, dimness:
oculorum,Plin. 28, 6, 16, § 58:
nascitur ex assiduitate laborum animorum hebetatio quaedam ac languor,Sen. Tranq. An. 15, 12.