Temperature:
* Cold: This is the most direct opposite in terms of temperature.
Other meanings:
* Cool: This can be used in the sense of not being enthusiastic or passionate.
* Unfriendly: This is the opposite of "warm" in the sense of being welcoming and approachable.
* Hostile: This is a stronger word that means unfriendly and aggressive.
* Cold: This can also be used to describe someone who is emotionally distant or unfeeling.
Specific examples:
* Warm weather: The opposite is cold weather.
* A warm welcome: The opposite could be a cold reception, an unfriendly greeting, or a hostile attitude.
* A warm personality: The opposite could be a cool personality, a distant personality, or an unfriendly personality.
It's important to consider the context to determine the best opposite word for "warm."