Unheated (adjective)

Not made warm or hot; not heated.

Origin:

From the word "un" meaning "not" and "heated" meaning "made warm or hot".

Examples:

1. The unheated room was too cold to sleep in.
2. He kept the unheated milk on the counter.
3. She was used to taking cold showers in the unheated cabin.
4. The unheated pool was too cold to swim in.
5. The unheated greenhouse was not warm enough for tropical plants.