初生之犊不畏虎

初生之犢不畏虎
chūshēngzhīdúbùwèihǔ
  1. lit. a new-born calf has no fear of the tiger (idiom)
  2. fig. the fearlessness of youth

CEDICT

A young person is often fearless and willing to take risks.

Wiktionary

刚出生的小牛不惧怕老虎。比喻阅历不深的年轻人敢说敢做，无所畏惧。

重編國語辭典

阅世不深的年轻人敢说敢做，无所畏惧

維基詞典

Entry Composition

1 初生之犊 chūshēngzhīdú
  1. (figurative) simple or daring young person
  2. (literally) newborn calf
  3. newborn calf
  4. simple or daring young person
2 不畏 bùwèi
  1. unafraid
  2. to defy
3 虎 hǔ tiger

classifier: 隻