A user suggests that this Japanese entry be cleaned up, giving the reason: “This isn't a verb, so we shouldn't be using {{ja-verbconj}}, which confusingly links through to Appendix:Japanese_verbs.”
Please see the discussion on Requests for cleanup(+) for more information and remove this template after the problem has been dealt with.
Alternative spelling
可し (obsolete)



べし (beshiirregular

  1. (attaching to terminal form) must, shall
    1. indicating certainty
      Chihō rosen no ikutsuka wa yagate haishisarerubeki unmei ni aru.
      Some of the local railways will soon be abolished.
    2. indicating requirement
      Kono ken ni tsuite wa kimi ga sekinin o torubeki da.
      You should take responsibility on this.
      Ashita wa hachiji made ni shukkin-subeshi.
      You should work until eight o'clock tomorrow.
      Eigo wa koe o dashite yomu beki da.
      You should read English aloud.
      Rainen no hakurankai kaisai ni ma ni awaseru beku, tokkan kōji ga okonawareteiru.
      In order to hold the exhibition in time next year, hasty construction is underway.


  • The modern conjugation of べし is a combination of its classical conjugation and the conjugation of べき + (da).

Usage notesEdit

  • Verb する takes the classical terminal form , rather than the modern terminal form する, when preceding べし. Hence "すべし" ("should do").
  • This word is morphologically a clitic. It is classified as 助動詞 (jodōshi, auxiliary verb) in traditional Japanese grammar.