Crossword Genius

Fast old speed (5)

Ross

I believe the answer is:

lento

I'm a little stuck... Click here to teach me more about this clue!

'fast old speed' is the definition.
Both the answer and definition are adverbs. Perhaps you can see an association between them that I can't see?

'fast old' is the wordplay.
'fast' becomes 'lent' (Lent is a period of fasting in Christianity).
'old' becomes 'o' (abbreviation).
'lent'+'o'='LENTO'

Can you help me to learn more?

(Other definitions for lento that I've seen before include "(When playing music) slowly" , "Slow (mus.)" , "Scored slowly" , "How one scores slowly" , "It's slower than adagio" .)

I've seen this clue in The Mirror.
Want a hint initially instead of a full solution? Install my app