Meaning
A period of success, popularity, or power; prime.
Etymology
Origin: Unknown
Late 16th century, from earlier heyda (1520s), as exclamation; compare hey, hei and Swedish hej då. Sense “period of success, vigor” is a reanalysis as heyday based on unrelated day (as “period of time”) – compare day in the sun.
Synonyms & Antonyms
NYT Puzzle Appearances
Accepted in 1 recorded puzzle: