hebetate
verb
heb·e·tate ˈhe-bə-ˌtāt 
hebetated; hebetating
transitive verb
: to make dull or obtuse
hebetation
ˌhe-bə-ˈtā-shən
noun 
Word History
Etymology
Latin hebetatus, past participle of hebetare, from hebet-, hebes dull
First Known Use
1574, in the meaning defined above