1. Adverb (fukushi)

   1.

   veritably; verily; to be sure; certainly

2. Archaic/formal form of na-adjective, Noun

   2.

   certain; inevitable; definite

Example sentences

• 彼は口座の中の一定額を子供用に用いた。

  He had some money in an account that he'd set aside for his kids.

• 一定の条件付きで、彼の提案に賛成します。

  I support his proposal with certain qualifications.