heyday

Etymology
Late 16th century, from earlier (1520s), as exclamation – compare,. Sense “period of success, vigor” is a respelling as heyday based on unrelated (as “period of time”) – compare.

Noun

 * 1) A period of success, popularity, or power; prime.
 * The early twentieth century was the heyday of the steam locomotive.
 * 1)  An exultation of the spirits; gaiety; frolic.
 * 1)  An exultation of the spirits; gaiety; frolic.

Translations

 * Bulgarian: ,
 * Czech:, , rozmach
 * Danish: blomstringstid, ,
 * Dutch: ,
 * Finnish:
 * French:
 * Galician: fastixio,, auxe
 * German:
 * Hungarian:
 * Italian:
 * Japanese:
 * Manx: ard-laa
 * Maori: poutūmārōtanga
 * Norwegian: glansperiode
 * Portuguese:
 * Russian:, , лу́чшая пора́
 * Serbo-Croatian:
 * Cyrillic: про̏цва̄т, зла́тнo до̑ба
 * Roman:, zlátno dȏba
 * Spanish:
 * Swedish:
 * Ukrainian:

Interjection

 * 1) A lively greeting.
 * 2)  An expression of frolic and exultation, and sometimes of wonder.
 * 3) * 1600, Ben Jonson - Cynthia's Revels :
 * "Come follow me, my wags, and say, as I say. There's no riches but in rags; hey day, hey day, &c."
 * "Come follow me, my wags, and say, as I say. There's no riches but in rags; hey day, hey day, &c."