How to say "requisite" in Japanese

• 必須ひっすCommon
  no-adjective, na-adjectiveCovers the adjective sense of 'requisite' meaning indispensable, essential, or required. Used to describe that something is a necessary condition for doing or completing something, as in documents or skills that are required.
  堪能たんのうな英語力えいごりょくは必須ひっすです。↗

  Fluency in English is a must.
• 必需品ひつじゅひんJLPT N2approx.Common
  nounCorresponds to 'requisite' as a noun meaning a necessary article or essential item. Use it for physical goods or supplies one cannot do without, such as daily necessities or travel essentials.
  カメラは私の必需品ひつじゅひんでした。↗

  The camera was essential for me.
• 要件ようけんCommon
  nounMatches 'requisite' in the formal sense of a requirement, necessary condition, or sine qua non. It refers to conditions that must be fulfilled, especially in legal, procedural, or technical contexts, rather than to needed items.

Use 必須 for the adjective sense 'indispensable/required', 必需品 for 'requisite' as a physical necessity or essential item, and 要件 for a formal requirement or necessary condition.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 必須ひっすindispensable
• 必需品ひつじゅひんnecessities
• 要件ようけんrequirement