Crossword Genius

Silly, putting coordinate behind bend (5)

Ross

I believe the answer is:

loopy

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

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

'coordinate behind bend' is the wordplay.
I cannot really understand how this works, but
'coordinate' could be 'y' (as in X and Y coordinates on a grid) and 'y' is located in the answer.
The remaining letters 'loop' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).

'putting' acts as a link.

Can you help me to learn more?

(Other definitions for loopy that I've seen before include "Dotty; like a lasso" , "Round the bend" , "Silly" , "Mad" , "twisted?" .)

I've seen this clue in The Daily Express.
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