| a. | 1. | Having cold blood; - said of fish or animals whose blood is but little warmer than the water or air about them. |
| 2. | Deficient in sensibility or feeling; hard-hearted. | |
| 3. | Not thoroughbred; - said of animals, as horses, which are derived from the common stock of a country. |
| Adj. | 1. | cold-blooded - without compunction or human feeling; "in cold blood"; "cold-blooded killing"; "insensate destruction" |
| 2. | cold-blooded - having cold blood (in animals whose body temperature is not internally regulated) Antonyms: warm-blooded - having warm blood (in animals whose body temperature is internally regulated) |