Impassive is a related term of unresisting.
As adjectives the difference between impassive and unresisting
is that impassive is having, or revealing, no emotion while unresisting is not resisting; compliant.
impassive
English
Adjective
(
en adjective)
Having, or revealing, no emotion.
Still or motionless.
Synonyms
* apathetic, phlegmatic
unresisting
English
Adjective
(-)
Not resisting; compliant.