stone cold

a cold day in July

The time of occurrence of an event that will never happen.

blow hot and cold

To behave inconsistently; to vacillate or to waver, as between extremes of opinion or emotion.

carved in stone

Unchangeable.

cast the first stone

To act self-righteously in accusing another person, believing oneself to be blameless.

catch a cold

To contract a cold.

cold cash

Money, regarded as an incentive that can override any doubts or ethical concerns.

cold chills

Feelings of fear.

cold comfort

Much less reassurance, consolation, aid, or pleasure than one needs or desires.