"Cold freckle" is not a typical phrase or commonly used term, and thus synonyms for it may not exist. However, if we break down the meaning of the two words separately, synonyms can be found. "Cold" can be replaced with chilly, frigid, cool, or icy. Meanwhile, "freckle" can be substituted with spot, blemish, mark, or pigmentation. Although these synonyms do not convey the exact same meaning when combined, they provide alternative options to describe aspects of what "cold freckle" may imply, such as a cold spot or a freckle-like mark that feels cold.