Crossword Genius

Speedy firm? (4)

Ross

I believe the answer is:

fast

I believe this is a double definition.

'speedy' is the first definition.
('fast' can be similar in meaning to 'speedy')

'firm?' is the second definition.
('fast' can be a synonym of 'firm')

(Other definitions for fast that I've seen before include "Speedily - secured" , "Quick - abstain from food" , "Lent, perhaps" , "Dissolute" , "fare-dodging" .)

I've seen this clue in The Times.
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