相あい成なる

godan verb (-ru)

to become; to come to be

Formal, polite equivalent of 成る (なる). Used in announcements, official statements, and formal writing. Often appears as 相成ります or 相成りました.

See also: なる

• 開かい会かい式しきは午ご前ぜん十じゅう時じより相あい成なります。

  The opening ceremony will be held from 10 a.m.

• このたび、結けっ婚こん式しきを挙あげる運はこびと相あい成なりました。

  We are pleased to announce that we will be holding our wedding ceremony.