at·trit 
(ə-trĭt) or at·trite(ə-trĭt)
(ə-trĭt) or at·trite(ə-trĭt)tr.v. at·trit·ted, at·trit·ting, at·trits or at·trit·ed or at·trit·ing
To weaken or reduce in number by stress or military action: "attriting enemy forces faster than they could be replaced" (Lewis Sorley ).
[Back-formation from ATTRITION.]