Coldblooded is a synonym of unresponsive.
As adjectives the difference between coldblooded and unresponsive
is that coldblooded is while unresponsive is not responsive; unreactive.
unresponsive
English
Adjective
(
en adjective)
Not responsive; unreactive.
Indifferent or apathetic; emotionless.
Synonyms
* nonresponsive
Antonyms
* responsive