► cold when the weather is cold, the temperature of the air is very low:  It was a cold, clear night. They say it’s the coldest winter for over 50 years.
► cool slightly cold in a pleasant way, especially after it has been hot:  It’s very hot during the day, but cooler at night.
► crisp slightly cold, dry, and clear, in a way that is pleasant:  The crisp mountain air is good for your health.
► chilly slightly cold in an unpleasant way:  It’s chilly outside, so take a sweater.
► frosty very cold, with the ground covered in frost (=ice that is white and powdery):  It was a bright frosty morning and we could see our breath.
► freezing (cold) very cold, especially in a way that makes you feel uncomfortable:  It was freezing cold last night.
► icy (cold) extremely cold so that water outside becomes ice:  An icy wind blew across the field.
► bitter (cold) very cold in a way that feels very unpleasant:  The bitter wind seemed to go right through us.
► frigid formal very cold:  I stepped out into the frigid darkness of a December night.
► wintry cold and feeling like winter. Used especially in weather reports and writing:  The wintry temperatures continued into April.