micchiri
Describes something done thoroughly without shortcuts — intensive training, densely packed contents, or rigorous study. Implies diligence and density.
💡Training camp — 'We practiced micchiri for eight hours straight.'
試験前にみっちり勉強した。
I studied micchiri intensively before the exam.
The coach ___ trained them for the championship.
コーチが選手権に向けて○○鍛えた。