べし

must

Meanings

  1. auxiliary, 'ku' adjective (archaic), formal, usually in kana must; should; ought to
  2. auxiliary adjective, 'ku' adjective (archaic), formal, usually in kana will (surely); be bound to; must
  3. auxiliary, 'ku' adjective (archaic), formal, usually in kana, indicates volition will (do); shall

In sentences

罰金ばっきんは現金げんきんで支払しはらうべし。 The fine shall be paid in cash. #121281

各おのおの会員かいいんは会費かいひを払はらうべし。 Each member has to pay a membership fee. #184629

折おり返かえし商品しょうひんを郵送ゆうそうするべし。 Please send the merchandise by return. #142066