反义词是warm，意思是温暖的，例如：

1. The female must find a warm place to hatch her eggs.母的必须找个温暖的地方孵蛋。

2.The warm climate favours many types of tropical plants.温暖的气候对多种热带植物生长有利。

3.He took her hand in his firm warm clasp.他用温暖的手紧紧握住她的手。