極める

きわめるkiwameru

ichidan verb · transitive

1. to carry to extremes
2. to go to the end of something
3. to reach the limits of something
4. to reach the peak of something (e.g. luxury, hardships, etc)
5. to be extremely (e.g. busy)
6. to exhaust completely
7. to have nothing left (e.g. to say)

Study it in Yanamino