How to say "essential" in Japanese
Choosing the right word
- 必要ひつようna-adjectiveCovers the sense of 'essential' as 'needed': something required for a purpose or result. The natural choice when you would equally say 'necessary', as in sleep being essential to health.
- 重要じゅうようna-adjectiveCovers the sense of 'essential' as 'important, significant': a matter that carries weight. The ordinary word for 'important'; when 'essential' really means 'very important' rather than 'needed', this is usually the word.
- 必須ひっすno-adjective, na-adjectiveCovers the sense of 'essential' as 'required, requisite': something that must be present or included. At home in requirements, conditions and specifications, where it states a hard requirement rather than mere importance.
- 肝心かんじんna-adjective, no-adjectiveCovers the sense of 'essential' as 'crucial, vital': the point everything hinges on. It singles out the part that really matters in a matter or plan, rather than mere overall importance.
- 不可欠ふかけつna-adjective, nounCovers the sense of 'essential' as 'indispensable': something one cannot do without. Emphasizes that a thing cannot be lacking — the word when 'essential' means you simply cannot manage without it.
Use 必要 for what is needed, 重要 for what is important, 必須 for hard requirements, 肝心 for the crucial point, and 不可欠 for what cannot be done without.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only
Japanese equivalents
- 必要ひつようnecessary
- 重要じゅうようimportant
- 必須ひっすindispensable
- 肝心かんじんessential
- 不可欠ふかけつindispensable
- 本質的ほんしつてきessential
- 肝要かんようextremely important
- 必携ひっけいindispensable
- エッセンシャルessential
- 切要せつようessential
- 至要しようof paramount importance
- 欠くことのできないかくことのできないindispensable
- 欠くことができないかくことができないindispensable
- 欠くべからざるかくべからざるindispensable
- 必備ひつびindispensable
- 切っても切れないきってもきれないinseparable (esp. bond, relationship)
- 実質じっしつsubstantive
- 真性しんせいgenuine
See also
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