Learner's definition of INSENSITIVE
[more insensitive; most insensitive]
: not sensitive: such as a : showing that you do not know or care about the feelings of other people
b : not responding to or caring about problems, changes, or needs — often + to c not used before a noun : not greatly affected by something — usually + to
He's just a rude, insensitive jerk.
a racially insensitive comment [=an offensive comment about a person's race]
It was insensitive of her to say that.