Crossword Genius

A poetic pattern in progress (5)

Ross

I believe the answer is:

afoot

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

'in progress' is the definition.
(I've seen this before)

'a poetic pattern' is the wordplay.
'poetic pattern' becomes 'foot' (I can't explain this - if you can you should give a lot more credence to this answer).
'a'+'foot'='AFOOT'

Can you help me to learn more?

(Other definitions for afoot that I've seen before include "Going on" , "Under way (like hunted game?)" , "Brewing" , "Astir" , "In the pipeline" .)

I've seen this clue in The Telegraph.
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