Ko
(
コ
)
tsu
(
ツ
)
Ko
(
コ
)
tsu
(
ツ
)
App Store
Google Play
Vocabulary
N1
Day 9
単独
New
単独
単独
たんどく
solo, sole
noun·na-adjective
Sino-Japanese
Lv.4
Again
1
Hard
2
Good
3
Easy
4
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