整理, せいり
Takes suru, Transitive
1. sorting, arrangement, organization, putting in order, adjustment, regulation
2. liquidation, settlement, consolidation, clearance (e.g. debt), paying off
3. retrenchment, curtailment, cutting down, disposal, to retrench, to curtail, to dispose of
部屋の整理をしたほうがいいよ。
に
Particle
1. at (place, time), in, on, during
2. to (direction, state), toward, into
3. for (purpose)
4. because of (reason), for, with
5. by, from