with; by means of; as of

をもって means by means of something, or marks a formal point in time at which something takes effect. Attach it to a noun. It is formal, common in announcements and ceremonies, often marking deadlines or methods.

Examples

• 本日ほんじつをもって、当店とうてんは閉店へいてんいたします。

  Honjitsu o motte, touten wa heiten itashimasu.

  As of today, our store will close.

• 書面しょめんをもって、ご連絡れんらく申もうし上あげます。

  Shomen o motte, go-renraku moushiagemasu.

  We will contact you in writing.

Vocabulary in these examples

• 閉店 closing (a store)
• 連絡 contact, getting in touch

Related patterns · Formal and literary

• 〜にあって in; at; under (a situation)
• 〜とあって because (a special situation)
• 〜べからず must not; do not (prohibition)
• 〜まじき unbecoming; that should never be
• 〜ごとし like; as if
• 〜に難くない not hard to; easy to