coldest

having a low or inadequate temperature or feeling a sensation of coldness or having been made cold by e.g. ice or refrigeration;
extended meanings; especially of psychological coldness; without human warmth or emotion;
having lost freshness through passage of time;
(color) giving no sensation of warmth;
marked by errorless familiarity;
lacking originality or spontaneity; no longer new;
so intense as to be almost uncontrollable;
sexually unresponsive;
without compunction or human feeling;
feeling or showing no enthusiasm;
unconscious from a blow or shock or intoxication;
of a seeker; far from the object sought
lacking the warmth of life;

coldest is a valid Scrabble (US) TWL word

coldest is a valid Scrabble Word in Merriam-Webster MW Dictionary

coldest is a valid Scrabble Word in International Collins CSW Dictionary

coldest is a valid Words With Friends word