Synonyms of cold blooded

Adjective

1. cold, cold-blooded, inhuman, insensate, inhumane (vs. humane)

usage: without compunction or human feeling; "in cold blood"; "cold-blooded killing"; "insensate destruction"

2. cold-blooded (vs. warm-blooded), poikilothermic, poikilothermous, heterothermic, ectothermic

usage: having cold blood (in animals whose body temperature is not internally regulated)