Torpor is a related term of impassiveness.
As nouns the difference between torpor and impassiveness
is that torpor is being inactive or stuporous while impassiveness is the state of being impassive.
torpor
English
Alternative forms
* torpour
Noun
(-)
Being inactive or stuporous.
A state of apathy or lethargy.
(biology) A state similar to hibernation characterised by energy-conserving, very deep sleep
Synonyms
* torpidity
* sluggishness
* lethargy
* languor
Derived terms
* torporific
Related terms
* torpidity
* torpid
* torpidness
impassiveness
English
Noun
(-)
The state of being impassive.
Synonyms
* impassivity