tired

1. Origins, structure, and basic meaning

• Structure: 疲 has 10 strokes and concerns becoming tired or exhausted.
• Basic usage: 疲れる is read つかれる, and 疲労 is read ひろう.

2. Common pitfalls and similar expressions

• A verb and the noun for fatigue
  • 足が疲れる means one's legs get tired.
  • The 疲 in 疲労 is read ひ.
  • 疲労がたまった means fatigue built up. Here, 疲労 is the noun naming the fatigue itself.