巣立つ

1. Origins, structure, and basic meaning

• Structure: 巣立つ (すだつ) joins nest 巣 and departure 立つ to mean leaving the nest.
• Basic usage: It describes a young bird fledging and figuratively a child leaving home to become independent.

2. Common pitfalls and similar expressions

• Literal fledging and human independence
  • With a person as subject, 巣立つ is a metaphor for establishing an independent life rather than leaving a physical nest.