This is about the one-place predicate “ignorant”, not about the two-place predicate “ignorant of”. My impression as a non-native speaker is that a negative connotation attaches to the first, but not the second. There might also be a two-place version of “ignorant” with a negative connotation: “ignorant about”.
This is about the one-place predicate “ignorant”, not about the two-place predicate “ignorant of”. My impression as a non-native speaker is that a negative connotation attaches to the first, but not the second. There might also be a two-place version of “ignorant” with a negative connotation: “ignorant about”.