1. (a.) Having cold blood; -- said of fish or animals whose blood is but little warmer than the water or air about them.
2. (a.) Deficient in sensibility or feeling; hard-hearted.
3. (a.) Not thoroughbred; -- said of animals, as horses, which are derived from the common stock of a country.
Thesaurus Entries
apathetic, barbaric, barbarous, brutal, callous, cool, cruel, dispassionate, heartless, imperturbable, indifferent, inhuman, insensitive, merciless, pitiless, poikilothermic, ruthless, savage, steely, stony, thick-skinned, uncaring, unemotional, unexcited, unfeeling, unimpassioned, unmoved, unresponsive, unsympathetic, vicious
