My grandfather is eighty years old but still fit as a fiddle.
fit as a fiddle
idiomIn good health
Origin
disputed origin17th century, originally 'as fine as a fiddle': fiddles were prized, finely made and carefully kept instruments; 'fit' here originally meant suitable or well-made.
After three months of regular exercise and healthy eating, she feels fit as a fiddle and ready for the race.
Despite the long and difficult recovery process following his surgery, the athlete returned to the field looking fit as a fiddle and stronger than ever before.
Last updated June 7, 2026