Unfeeling is a related term of impassive.
As adjectives the difference between unfeeling and impassive
is that unfeeling is without emotion or sympathy while impassive is having, or revealing, no emotion.
unfeeling
English
Synonyms
* emotionless
* stony
* uncaring
Antonyms
* sympathetic
Derived terms
* unfeelingly
* unfeelingness
impassive
English
Adjective
(
en adjective)
Having, or revealing, no emotion.
Still or motionless.
Synonyms
* apathetic, phlegmatic