苛立つ

1. Origins, structure, and basic meaning

• Structure: 苛立つ is read as いらだつ and means “to grow impatient” and “to become irritated”.
• Basic usage: It describes passengers growing impatient with a delay and someone becoming irritated by repeated mistakes.

2. Common pitfalls and similar expressions

• Key distinction: 乗客が苛立つ
  • It covers both impatience from waiting and irritation at repeated failure. The experiencer is marked as in 乗客が苛立つ.