Confusion over these sort of terms is pretty common. One that really grates for me is that the UK media use the word "refusenik" to mean "someone who is stubbor

Confusion over these sort of terms is pretty common. One that really grates for me is that the UK media use the word "refusenik" to mean "someone who is stubborn and refuses to do something" (originally it referred to those denied permission to emigrate from the Soviet Union). I wonder if there's a term for these sort of words - those which are commonly confused for something the opposite of what they actually mean...