From Longman Dictionary of Contemporary Englishnot be much of a somethingnot be much of a somethingBAD ATto not be a good example of something or not be very good at something I’m not much of a dancer, I’m afraid. It wasn’t really much of a storm. → much
Examples from the Corpus
not be much of a something• I'm not much of a dancer.• A small blemish on the tape of a song or movie may not be much of a problem.• Despite the forecast, it wasn't much of a storm. 