to need; to require

💡 Nuance & Usage: This verb phrase literally means "to make something necessary" or "to treat something as necessary." It's commonly used to express an objective or formal requirement, often in contexts like rules, qualifications, or problem-solving. It implies a stronger sense of necessity than just 「〜がいる」 or 「〜が要る」, especially for abstract things or conditions. Often used in its passive form 「必要とされる」.