Crossword Genius

Stuck, showing the wrong time (4)

Ross

I believe the answer is:

fast

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

'stuck' is the definition.
(both can mean secure)

'the wrong time' is the wordplay.
'the wrong' becomes 'fas' (I can't justify this - if you can you should believe this answer much more).
'time' becomes 't' (abbreviation).
'fas'+'t'='FAST'

'showing' acts as a link.

Can you help me to learn more?

(Other definitions for fast that I've seen before include "Moving quickly" , "Express" , "Quick - abstain from food" , "Rapidly; tight" , "Period during which fare is reduced" .)

I've seen this clue in The Times.
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