根絶やしにする
to root out an evil―eradicate an evil―exterpate a pernicious doctrine―exterminate a pernicious sect
(室内なら)to partition a room (into so many parts)―partition off a part of the room―(地面なら)―lot off land―mark off a lot (from another)
まばらにする
しだいにする
to do something little by little
あべこべにする
よそにする
to neglect anything
to let someone or something bite
to pave the way for anything
to splash the ground with various crests