太っ腹

1. Origins, structure, and basic meaning

• Structure: 太っ腹 is read ふとっぱら and describes generosity in giving or spending.
• Basic usage: In 先輩は全員の食事代を払うという太っ腹な人だ。, the senior colleague is described as generous enough to pay for everyone's meals.

2. Common pitfalls and similar expressions

• Character, not body size
  • In this context, 太っ腹な人 describes generosity, not a large stomach. It also describes a person's actions, as in 太っ腹な値引き, and modifies nouns with な.