ˈ ̷ ̷ˌ ̷ ̷ ̷ ̷ noun
( -s )
Etymology: in (IV) + fighting
1.
a. : fighting or boxing at close range
his bowie … was the unexcelled weapon for infighting — American Guide Series: Arkansas
b. : fighting (as between rivals) that is not openly acknowledged or conducted
2. : fighting without rules : rough-and-tumble fighting