otonappokuarimasen
1. Not acting like an adult.; Not mature.
★ Common
Adjective
#1000567
1. Not acting like an adult.; Not mature.
1. Japan
1. adult; grown-up
1. -ish; -like
1. Japan's best; number one in Japan
1. empty; vacant
1. western Japan (usu. Chūbu region and westward)
1. gentle; quiet
2. quiet (color, pattern, etc.); sober
1. wealthy; rich