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Showing an alert, competent style: play heads-up basketball.
Informal Information or notification: gave me a heads-up on the new security measures.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
1. alert; resourceful.n.
2. Chiefly Politics. a warning: sending a heads-up to the Pentagon about possible attacks.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||heads-up - a warning message; "he sent a heads-up to the District Attorney"|
warning - a message informing of danger; "a warning that still more bombs could explode"
|Adj.||1.||heads-up - fully alert and watchful; "played heads-up ball"|
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