The term 'unconscious' can be described by the following crossword solutions: COLD (4 letters), OBLIVIOUS (9 letters), UNINTENTIONAL (13 letters), UNPLANNED (9 letters), OUT (3 letters), INACOMA (7 letters), OUTCOLD (7 letters), OUTOFIT (7 letters), COMATOSE (8 letters), and SENSELESS (9 letters). Unconsciousness is a state of being unaware of one's surroundings, and can be caused by physical or psychological trauma. It can also be induced by drugs, alcohol, or other substances. Unconsciousness can range from a light sleep to a deep coma, and can last for a few seconds or several hours.