From Longman Dictionary of Contemporary Englisha good/bad judge of somethinga good/bad judge of somethingJUDGEsomeone whose opinion on something is usually right or wrong Sandra’s a very good judge of character. → judge
Examples from the Corpus
a good/bad judge of something• He's also a good judge of a quick run.• I didn't protest as it was his fence officially, and he was supposed to be a good judge of torque.• Sarah's not a very good judge of character.• And for all his imagination, he was not a good judge of character on limited acquaintance.• But Anya's a better judge of character than she used to be, back in the old homeland.• It was not that he was too sure of himself simply that he was a good judge of the possible.• He was a good judge of character, hated hypocrisy, and had no time for conceit.• Munnings, he told reporters, was a better judge of horses than paintings. 