Fit as a fiddle
/fɪt əz ə ˈfɪdl/informalUK · US
What does “Fit as a fiddle” mean?
Fit as a fiddle means in very good health and physical condition
Someone back to their usual walks and hobbies after an illness might say they feel fit as a fiddle. The phrase expresses confidence in how they feel.
It does not necessarily mean being a competitive athlete. A person can be healthy without being exceptionally strong or fast.
When do people say it?
A cheerful way to say someone is healthy and energetic. It is an everyday description, not a medical assessment.
“Grandad is fit as a fiddle and walks to the market every day.”
Is it formal or informal?
Register: informal. It is most at home in everyday conversation rather than formal writing. Most common in UK and US.
Where does it come from?
“Fiddle” is another word for a violin. The comparison gives the phrase its rhythm, though it does not by itself explain why the instrument came to represent good health.
Origin confidence: Disputed; treat with caution
How do you say “Fit as a fiddle” in other languages?
Last updated 2026-10-01