Answer: heyday

AnswerCrossword Clue
HEYDAYPrime.
heydaythe period of one's greatest success, also HEYDEY
heydaythe time of greatest success, popularity, etc.
HEYDAYTime of greatest prosperity
HEYDAYPeriod of one's prime
HEYDAYGolden period
HEYDAYPeriod of greatest success
HEYDAYThe best of times
HEYDAYProsperous time
HEYDAYPrime time
HEYDAYTime of greatest vigor.
HEYDAYBest of times
HEYDAYPrime
HEYDAYGolden years
HEYDAYPeriod of greatest vigor
HEYDAYPersonal "prime time"
HEYDAYGolden age
HEYDAYPeriod of greatest popularity