Definition of "wide-awake" []

• Completely awake. (adjective)
• Alert; watchful. (adjective)
• See sooty tern. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The result is that the colored Methodist minister is generally a wide-awake businessman, with something of the politician in his makeup, who is sometimes an inspiring and valuable leader of men."
• "However, electrodes implanted in the rat brains showed that some neurons went off line briefly in seemingly wide-awake animals while other neurons remained on."
• "At 4: 45 a.m. 44 inner city high school kids boarded a school bus, on time and wide-awake, to meet the President."