How to say "require" in Japanese

• 義務付けるぎむづけるCommon
  ichidan verb, transitive verbCovers 'require' as 'make compulsory': a rule, law, or authority obligates people to do something. This is the choice for mandates and imposed obligations, not for the sense of simply needing something.
  全員ぜんいん出席しゅっせきを義務ぎむづけられている。↗

  Attendance is compulsory for all members.
• 要するようするJLPT N1approx.Common
  suru verb (irregular), transitive verbCovers 'require' in the sense of 'need' or 'call for': a task, situation, or undertaking needs a particular quality, effort, or resource. Also used for how long something takes.
  教おしえるということは大おおいに忍耐力にんたいりょくを要ようする。↗

  Teaching demands a lot of patience.
• 求めるもとめるJLPT N3approx.Common
  ichidan verb, transitive verbCovers 'require' when a person or organization demands or asks for something, such as a qualification or a course of action. Its core sense is requesting and seeking, so it fits requirements directed at someone.
  いつでも彼かれの援助えんじょを求もとめられます。↗

  You can always ask for his help.

Use 「義務付ける」 when something is made compulsory or mandated by a rule or authority, 「要する」 when something needs or calls for a quality, resource, or time, and 「求める」 when someone demands or asks for something.

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

• 義務付けるぎむづけるto obligate
• 要するようするto need
• 必要とするひつようとするto need
• 要すようすto need
• 求めるもとめるto request
• 及ぶおよぶto require (to do)