習

1. Physical: The flapping of wings (originally a fledgling bird); by extension, flighty or repetitive motion.

2. Deliberate Action: Repetitive application of knowledge to achieve mastery; rehearsal, drilling, or exercise.

3. Internalized State: Habit or custom; that which has become second nature through repetition, including being "accustomed to" a situation.

• Verb: To practice, exercise, imitate, or follow a model.
• Adjective/Modifier: Accustomed, familiar, habituated.
• Noun: The act of practice; a specific custom or habitual way of behaving.

• 習 vs. 學: While both relate to learning, 學 generally denotes the acquisition of theory, reception of knowledge, or initial study, whereas 習 denotes the subsequent phase of repetition and refinement required for mastery.
• 習 vs. 慣: Both deal with habituation; 習 typically emphasizes the process (the act of getting used to something), while 慣 tends to emphasize the result (the state of being accustomed).

Simplified variant: 习 (U+4E60).

Derived from the image of a young bird flapping its wings repeatedly to master flight, providing the foundational sense of repetition leading to mastery.