N5
きれい
Definition
pretty, lovely, beautiful, fair, clean, clear, pure, tidy, neat, completely, entirely
N4
このあいだ、このかん
Definition
the other day, lately, recently, during this period, meanwhile, in the meantime
N3
おそらく
Definition
perhaps, likely, probably, I dare say
N2
いっさくねん、おととし
Definition
year before last
N1
いっぺん
Definition
complete change, about-face