"wanting sympathy, unkind," c. 1600, from cold (adj.) + -hearted. Originally in Shakespeare. Compare cold-blooded. Old English had cealdheort (adj.) "cruel." Related: Cold-heartedly; cold-heartedness.
cold feet
cold shoulder
cold turkey
cold war
cold-blooded
cold-hearted
coldly
coldness
cole
colectomy
Coleoptera
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