response β an answer or reply, as in words or in some action.
cruel β Someone who is cruel deliberately causes pain or distress to people or animals.
expressionless β (of a person's face or voice) not conveying any emotion; unemotional.
apathetic β If you describe someone as apathetic, you are criticizing them because they do not seem to be interested in or enthusiastic about doing anything.
frigid β very cold in temperature: a frigid climate.
careless β If you are careless, you do not pay enough attention to what you are doing, and so you make mistakes, or cause harm or damage.
blank β Something that is blank has nothing on it.
cold-blooded β Someone who is cold-blooded does not show any pity or emotion.
unforgiving β not disposed to forgive or show mercy; unrelenting.
draconian β of, relating to, or characteristic of the Athenian statesman Draco, or his severe code of laws.
insensitive β deficient in human sensibility, acuteness of feeling, or consideration; unfeeling; callous: an insensitive person.
scrupulous β having scruples, or moral or ethical standards; having or showing a strict regard for what one considers right; principled: scrupulous about defending human rights.
uncaring β a state of mind in which one is troubled; worry, anxiety, or concern: He was never free from care.
nonpermissive β habitually or characteristically accepting or tolerant of something, as social behavior or linguistic usage, that others might disapprove or forbid.