足りる

1. Origins, structure, and basic meaning

• Structure: 足りる (たりる) is an intransitive verb meaning to be enough or suffice for a need or condition.
• Basic usage: It describes ingredients sufficing for a number of people or a brief explanation being enough when it contains the key point.
  • この材料だけで四人分の料理を作るのに足りる。 — These ingredients are enough to cook for four people.
  • 説明は短くても要点があれば足りる。 — A short explanation is sufficient if it contains the key point.

2. Common pitfalls and similar expressions

• What is sufficient and for what
  • The sufficient item can be marked with が, while に can mark the purpose or standard, as in 料理を作るのに足りる.