• WordNet 3.6
    • n adieu a farewell remark "they said their good-byes"
    • ***
Webster's Revised Unabridged Dictionary
    • n Adieu A farewell; commendation to the care of God at parting.
    • interj. & adv Adieu Good-by; farewell; an expression of kind wishes at parting.
    • ***
Century Dictionary and Cyclopedia
    • adieu Literally, to God, an ellipsis for I commend you to God: an expression of kind wishes at the parting of friends, equivalent to farewell; hence, a parting salutation in general: as, adieu to my hopes.
    • adieu Synonyms Adieu, Farewell, Good-by. These words have completely lost their original meanings. In use the difference between them is only one of formality, good-by being the most common, and adieu the most formal. By the Society of Friends (and perhaps some other sects) farewell is preferred, as not involving the careless mention of the name of God. In strict propriety, farewell is a parting salutation to persons going away.
    • n adieu adieus or (in French spelling) adieux (a-dū z′ , ȧ-dyė′ ). A farewell or commendation to the care of God: as, an everlasting adieu; to make one's adieus.
    • ***
Chambers's Twentieth Century Dictionary
    • adv Adieu a-dū′ (I commend you) to God: farewell
    • n Adieu a farewell:—pl. Adieus or Adieux (a-dūz′)
    • ***


Webster's Revised Unabridged Dictionary
OE. also adew, adewe, adue, F. dieu, fr. L. ad, to + deus, God


In literature:

Adieu, sister mine; adieu mamma.
"The Diamond Coterie" by Lawrence L. Lynch
To her friends also we may bid adieu.
"The Bertrams" by Anthony Trollope
Two months ago he would not thus have held aloof, yet now he is half extending his hand as though in adieu.
"Starlight Ranch" by Charles King
Marjorie arose at once to bid him adieu.
"The Loyalist" by James Francis Barrett
I must bid you adieu.
"Famous Privateersmen and Adventurers of the Sea" by Charles H. L. Johnston
We then bid adieu to Mr. Rutherford, his family, the banditti and the edge of the twelve-mile prairie.
"Narrative of Richard Lee Mason in the Pioneer West, 1819" by Richard Lee Mason
But, subdued by the influences of death, he bade that brother an eternal adieu, with even fond caresses.
"Louis XIV., Makers of History Series" by John S. C. Abbott
I was afraid if I told her that, that she would prevent my seeing you this last time to say adieu.
"The Regent's Daughter" by Alexandre Dumas (Pere)
For the present, adieu!
"The Quadroon" by Mayne Reid
Marilla was coming home with the babies one afternoon when two lady callers and a girl were saying adieu and coming down the steps.
"A Modern Cinderella" by Amanda M. Douglas

In poetry:

No darkness cast of years between
Can darken you:
Man’s love will never bid my queen
"Adieux à Marie Stuart" by Algernon Charles Swinburne
In hope to sing without a sob
The anthem ever new,
I gladly bid the dusty globe,
And vain delights, Adieu.
"The Believer's Principles : Chap. V." by Ralph Erskine
'But I will never bid adieu
To him I prized so high:
As with my master I have lived,
I'll with my master die.
"A Tale" by John Logan
Forgive them all their praise, who blot
Your fame with praise of you:
Then love may say, and falter not
"Adieux à Marie Stuart" by Algernon Charles Swinburne
Then laughing loud, he flew
Away, and thus said flying,
Adieu, mine host, adieu,
I'll leave thy heart a-dying.
"The Cheat Of Cupid; Or, The Ungentle Guest" by Robert Herrick
"Alas, my love, I trembling hear
A father's last adieu;
I see, I see the falling tear
His wrinkled cheek bedew.
"Edwin and Eltruda, a Legendary Tale" by Helen Maria Williams

In news:

Willis bids adieu to ID ski area.
And adieu to Carla Bruni (read-this roundup).
We now must bid adieu to Sarkozy He swerved hard to the right, comme Mitt ici (Mais oui: exactement comme Mitt Romnéy), And said austerity is what's to be.
Sister act bids adieu with 'Oklahoma' at Three Stages in Folsom.
Shelby Keefe bids adieu to Pfister.
Lions bid adieu to Eric Wright.
France bids adieu to silver screens.
Big Ben bids Ward a fond adieu .
Mudville / Sports Adieu , John Scott.
Commissioners bid adieu to the mayor in their own unique fashion.
The Year We Bid Adieu to Redevelopment Agencies.
Feds glad to bid adieu to 2011, but will 2012 be better.
Like most around these parts, it was with little remorse that I bid adieu to 2010.
The Daily Bids Adieu to You and You and You.
Shape France is bidding adieu after only one year, the Post reports.