鈍る
にぶる · niburu · JLPT N1 · verb-godan
to weaken
🔪 Sounds like 'nib' + 'rue': a pen nib that grows dull, and you rue it
The kanji 鈍 has the metal radical 金 (metal), so 鈍る is metal losing its edge. Its sense is becoming dull, blunt, or weaker.
にぶる · niburu · JLPT N1 · verb-godan
to weaken
🔪 Sounds like 'nib' + 'rue': a pen nib that grows dull, and you rue it
The kanji 鈍 has the metal radical 金 (metal), so 鈍る is metal losing its edge. Its sense is becoming dull, blunt, or weaker.