未 開 封(みかいふう)

みかいふう

noun, no-adjective

unopened, sealed

1. unopened, sealed, still in original packaging

Describes a product or container that has not been opened from its original sealed state.

未開封(みかいふう)の商品(しょうひん)のみ返品(へんぴん)可能(かのう)です。

Only unopened items can be returned.

この牛乳(ぎゅうにゅう)は未開封(みかいふう)なら一週間(いっしゅうかん)持(も)つ。

This milk will keep for a week if left unopened.

押(お)し入(い)れから未開封(みかいふう)のまま忘(わす)れられていた荷物(にもつ)が出(で)てきた。

A package that had been forgotten while still unopened came out of the closet.

未開封(みかいふう) means "unopened" or "still sealed." It combines 未(み) (not yet) + 開封(かいふう) (opening a seal).

Similar words

未開封(みかいふう): unopened, still sealed
開封(かいふう)済(ず)み: already opened

Common patterns

未開封(みかいふう)の場合(ばあい): in the case of being unopened
未開封(みかいふう)のまま: while still unopened
未開封(みかいふう)品(ひん): unopened item
未開封(みかいふう)に限(かぎ)り: only if unopened

OTHER 未(み)～ WORDS:

未使用(みしよう): unused
未読(みどく): unread
未完成(みかんせい): incomplete, unfinished
未定(みてい): undecided, TBD

Usage

Frequently seen on return policies, food labeling, and online marketplace listings.

Related Words

Compare: 未使用(みしよう) (unused)

Compare: 新品未使用(しんぴんみしよう) (brand new, unused)

general

Added 2026.2.9 11:36 · Revised 2026.9.2 13:01

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