Noah Webster's Dictionary 1. (interj. & adv.) Good-by; farewell; an expression of kind wishes at parting. 2. (n.) A farewell; commendation to the care of God at parting.

Multi-Version Concordance Adieu (2 Occurrences) Luke 9:61 And another also said, I will follow thee, Lord, but first allow me to bid adieu to those at my house. (DBY) 2 Corinthians 2:13 I had no rest in my spirit at not finding Titus my brother; but bidding them adieu, I came away to Macedonia. (DBY)