Sentence examples for could hardly have from inspiring English sources

"could hardly have" is a grammatically correct phrase and can be used in written English.
It is typically used to express something that was difficult or almost impossible to do, or to express a negative or doubtful outcome. Here is an example: "She could hardly have predicted that the weather would be so unpredictable during her vacation." This sentence means that it was difficult for her to predict the weather and it turned out to be unpredictable during her vacation.