• adjective (ropier, ropiest)
1 resembling a rope.
2 Brit. Informal poor in quality or health.
3 Adj. Suspicious, dodgy
— DERIVATIVES ropily adverb ropiness noun.
Ropey is another one of those great general purpose slang words, covering a multitude of sins.
It can be used to describe pretty much anything which isn't in as good as state as it might be. It might be you with a hangover; your ex-girlfriend or the car you bought from someone in the pub last week.
Examples of usage are:
Have you seen Dave’s new bird. Definitely a bit ropey
Tell the boss I won’t be in today, I’m feeling a bit ropey