The MegaNegRaising dataset, also known as MegaNeRd, is a collection of data that captures patterns of neg-raising inferences and acceptability judgments for 925 clause-embedding verbs of English in various syntactic structures. It is part of a larger project that investigates lexically triggered inferences across clause-embedding verbs in English.

Neg-raising is a linguistic phenomenon where the negation in a sentence can be interpreted as about the embedded clause rather than the main clause. For example, in the sentence "I don't think he is coming", the negation is technically on "think", but we often interpret it as "I think he is not coming.