接頭辞ad-、行く、行く。語源の dieu, God については deity, 神を参照。すなわち、旅の安全を祈る神の祝福。
英語の語源
adieu
late 14c., adewe, from French adieu, from phrase a dieu (vous) commant "I commend (you) to God," from a "to" (see ad) + dieu "God," from Latin deum, accusative of deus "god," from PIE *deiwos (see Zeus). Originally said to the party left; farewell was to the party setting forth.
例文
1. 「Gentlemen,I bid you adieu .」
「皆さん、失礼します。」
2.I bid you adieu .
さようなら。/
3.We have just called in to bid you adieu .
私たちはあなたに別れを告げに来ました.
4.And now,my dear child, adieu for the present.
今、私の親愛なる子供、しばらく再会しました.
5.We are gathered here today to bid adieu to Lizzie the lizard.