How to say "expire" in Japanese

• エクスパイア
  nounA katakana borrowing of the English word. It corresponds to 'expire' directly, but it is little used, so this is seldom the word you want when you need to say 'expire' in Japanese.
• 絶え入るたえいる
  godan verb, intransitive verbCovers 'expire' meaning 'die': it pictures a person drawing their last breath. Use it for that image of the breath ceasing; it does not apply to a period or document running out.
• 空しくなるむなしくなる
  godan verbAlso covers 'expire' in the sense of dying. It expresses the death through the image of a person's presence becoming empty and gone; it is not used for a deadline or offer running out.
• 事切れることきれる
  ichidan verb, intransitive verbCovers 'expire' meaning 'die': it states that a person breathed their last. Use it when saying that someone died; it is not used for a deadline or document running out.

Three of the four — 「絶え入る」, 「空しくなる」, 「事切れる」 — render 'expire' only in the sense 'die', differing in imagery, while the loanword 「エクスパイア」 is little used; none of them expresses a period or document running out.

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

• エクスパイアexpire
• 絶え入るたえいるto expire
• 空しくなるむなしくなるto die
• 事切れることきれるto breathe one's last
• きれるto expire (time limit, etc.)
• 満ちるみちるto expire (of a period of time)
• 満つみつto mature