愚姪

愚侄
yúzhí
  1. "your ignorant nephew", referring to oneself
  2. (formal, humble, obsolete) "your ignorant nephew", referring to oneself

Wiktionary

Entry Composition

1 愚 yú
  1. to be stupid
  2. to cheat or deceive
  3. me or I (modest)
2 姪 zhí brother's son; nephew