coldcoldcoldscoldercoldest2noun1(no plural) cold weather: Don't go out in the cold.2(pluralcolds) a common illness of the nose and throat. When you have a cold, you often cannot breathe through your nose and your throat hurts: I've got a cold. Come in out of the rain, or you'll catch a cold.coldcoldcoldercoldest1adjective (colder, coldest)1not hot or warm; with a low temperature: Put your coat on – it's cold outside. I'm cold. Will you put the heater on?hot and cold wateroppositehotwhich word?Cool, cold or freezing? Cool means quite cold, especially in a pleasant way: • It's hot outside but it's nice and cool in here.Freezing means extremely cold, often in an unpleasant way: • It's absolutely freezing outside.2not friendly or kind: She gave him a cold, hard look.▶ coldlyadverb: She looked at me coldly.