大切
たいせつ
taisetsu
= important; precious; valuable; cherished
大切 is the word Japanese speakers reach for when something matters not because of its price tag, but because of its weight in their lives — whether it’s a person, a promise, or a moment.
大切 (taisetsu) functions as a na-adjective meaning “important,” “precious,” or “treasured.” Its scope is broader than 重要 (juuyou), which focuses on objective importance or urgency. 大切 carries emotional warmth — it implies that something is worth protecting, handling with care, or holding close. You use it for people you love (大切な人, taisetsu na hito, “a person who is dear to me”), for possessions you treasure (大切にする, to take good care of something), and for abstract values you hold deeply. In daily speech it appears in expressions of care and commitment more often than in formal reports or instructions, where 重要 is more natural.
Learners sometimes use 重要 (juuyou) where 大切 would be more natural and vice versa. A useful rule: if you could replace the word with “crucial” in English (e.g., a crucial meeting, crucial data), use 重要. If you could replace it with “precious” or “dear” (e.g., a precious friendship, a cherished memory), use 大切. Also note that 大切にする means “to treasure” or “to take care of” — it is a commonly used verb phrase.
大 (dai/oo) means “large” or “great” and depicts a person with arms stretched wide. 切 (setsu/ki) means “to cut” but in compounds carries the sense of being sharply important or pressing. Together 大切 conveys something so significant it cuts through everything else — it demands attention.
Everyday use
健康は一番大切なものだと思う。
Kenkou wa ichiban taisetsu na mono da to omou.
I think health is the most important thing.
Formal / Cultural context
このカメラは亡き父のものなので、大切にしています。
Kono kamera wa nakie chichi no mono na node, taisetsu ni shiteimasu.
This camera belonged to my late father, so I take great care of it.
Casual / Social Media
友達を大切にしてね。
Tomodachi wo taisetsu ni shite ne.
Treasure your friends, okay?
大切 appears constantly in Japanese interpersonal communication as a way of expressing that a relationship or value is not taken for granted. Saying 大切な人 (a dear person) to someone is a sincere declaration of how much they matter — it is the word used in heartfelt messages, farewell speeches, and expressions of gratitude.
The phrase 大切にする (to treasure, to treat with care) also extends to objects, traditions, and principles. Japanese culture places significant value on caring for possessions over a long period — a concept embodied in words like 物を大切にする (to take good care of one’s belongings). This care-based relationship with objects is part of why 大切 appears in everyday contexts ranging from relationships to material goods.