鈍

Kanji: 鈍
Level: N2
Meaning: dull, slow
On'yomi: ドン
Kun'yomi: にぶ.い, にぶ.る
Strokes: 12
Common compounds: 鈍感 (どんかん) insensitive 鈍い (にぶい) dull
Memory hook: A metal (金) tool that is not sharp (屯) is dull (鈍).