The crossword solution for the term DECREASED IN WARMTH is COOLED, which is a 6 letter word. This term means that something has become less warm or has been made cooler. This could be referring to a physical object, such as a room, or a person's body temperature. It could also refer to a feeling or emotion, such as anger or excitement. In any case, the term DECREASED IN WARMTH is synonymous with the word COOLED.