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or heydey

[hey-dey] /ˈheɪˌdeɪ/
the stage or period of greatest vigor, strength, success, etc.; prime:
the heyday of the vaudeville stars.
Archaic. high spirits.
Origin of heyday1
1580-90; variant of high day, apparently by confusion with heyday2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for heydey
Historical Examples
  • Page 11, restored chapter head poetry from Fireside Companion version and changed "heydey" to "heyday."

    Kathleen's Diamonds Mrs. Alex. McVeigh Miller
  • The overthrow of the empire surprised them in the heydey of their happiness.

    The Honor of the Name Emile Gaboriau
  • If he moved without light he was likely to stumble, and heydey to his fifty crowns, not to say his liberty for many days to come.

    The Puppet Crown Harold MacGrath
  • Their mother, who came of an impoverished line of princes—the H——s— had died at Petersburg when her husband was in his heydey.

    Fathers and Children Ivan Sergeevich Turgenev
  • The popular printed magazines in America had their heydey in the muckraking period about ten years ago.

    The Photoplay Hugo Mnsterberg
  • According to him, although he was still a young man, the heydey again was gone, never to return.

    The Retrospect Ada Cambridge
  • In the heydey of gold mining, Lariat had been quite a flourishing place, but the hand of decay was upon it at the present time.

  • Those two happy winters in Columbus, when I was finding opportunity and recognition, were the heydey of life for me.

    Literature and Life William Dean Howells
British Dictionary definitions for heydey


the time of most power, popularity, vigour, etc; prime
Word Origin
C16: probably based on hey
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for heydey



late 16c., alteration of heyda (1520s), exclamation of playfulness or surprise, something like Modern English hurrah, apparently an extended form of Middle Elish interjection hey or hei (see hey). Modern sense of "stage of greatest vigor" first recorded 1751, which altered the spelling on model of day, with which this word apparently has no etymological connection.

Online Etymology Dictionary, © 2010 Douglas Harper
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