Ko
(
コ
)
tsu
(
ツ
)
Ko
(
コ
)
tsu
(
ツ
)
App Store
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Vocabulary
N1
Day 19
不可欠
New
不可欠
不可欠
ふかけつ
indispensable, essential
noun·na-adjective
Sino-Japanese
Lv.4
Again
1
Hard
2
Good
3
Easy
4
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