Slightly unwell, like a guy perhaps (5)

I believe the answer is:
ropey
'slightly unwell' is the definition.
I can't judge whether this definition defines the answer.
'like a guy perhaps' is the wordplay.
I cannot quite see how this works, but
'like' could be 'y' (similar in meaning) and 'y' is found in the answer.
'guy' could be 'rope' (guy is a type of rope or cable) and 'rope' is located in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Another definition for ropey that I've seen is " Very poor quality".)
