Completely cold. / Without emotion.

(intransitive, idiomatic) To wane; to lose interest or enthusiasm for something or someone; to become disenchanted or to fall out of love with someone.

In a cold-hearted manner.

In a cold-blooded manner.

Without sympathy, feeling or compassion; callous or heartless

the state of being cold-blooded

the state of being cold-hearted

To disrespect someone, especially by ignoring them.

plural of cold shoulder

(idiomatic) A deliberate act of disrespect; a slight or snub