Ko
(
コ
)
tsu
(
ツ
)
Ko
(
コ
)
tsu
(
ツ
)
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Vocabulary
N1
Day 30
鈍る
New
鈍る
鈍る
にぶる
to become blunt, to grow dull
Group 1 verb
native Japanese
Lv.5
Again
1
Hard
2
Good
3
Easy
4
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