An example from a dictionary:
"讨不讨厌呀！Isn't that annoying?"
The first 讨 usage isn't clear here, as for beginner. Is it a special grammar structure? Maybe even an accidental mistake in the dictionary? (in case it happens sometimes)
Partly reminds tag question, but then it probably should have been "讨厌不讨厌" not "讨不讨厌", I'm not sure how it is used with multi-character words.