ネガティブ is an adjective that's based on the word "negative" (or maybe a word from another European language). But when describing a person, does it mean "negative", as in pessimistic, always complaining, or does it mean "bad" in general?
Apparently, in the news recently was a case where a school exam had
and listed one of the teachers in the example answer.
Saying "Who is the worst teacher?" would make sense, but "Who is the most negative teacher?" doesn't really make sense. Complaining about someone complaining seems a little odd, though maybe that's just me.