[{"Bold_text": "verb (used with object)", "List Items": ["to cool (a liquid) below its freezing point without producing solidification or crystallization; undercool."]}, {"Bold_text": "verb (used without object)", "List Items": ["to become supercooled."]}, {"Bold_text": "adjective", "List Items": ["very cool temperature, especially of the maximum coolness possible: used as a setting on air conditioners.", "Slang.very cool ;very sophisticated, up-to-date, unemotional, etc."]}]