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WordNet-OnlineFree dictionary and thesaurus of English. Definitions, synonyms, antonyms and more...
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Adjective heads-up has 1 sense
heads-up, wide-awake - fully alert and watchful; "played heads-up ball"Antonym:  unalert (indirect, via alert)
 
 
Verb head-up has 1 sense
head, head up - be the first or leading member of (a group) and excel; "This student heads the class"--1 is one way to be
 Sample sentences:
 Somebody ----s something
 Somebody ----s somebody
 
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