[1] : The Collaborative International Dictionary of English v.0.48

cock-a-hoop \cock`-a-hoop"\, a.
   boastful; defiant; exulting. also used adverbially.

   syn: boastful, braggartprenominal, braggingprenominal,
        braggy, big, crowing, self-aggrandizing, vainglorious.
        1913 webster

[2] : WordNet (r) 2.0

cock-a-hoop
     adj : exhibiting self-importance; "big talk" syn: boastful, braggarta,
            bragginga, braggy, big, crowing, self-aggrandizing,
            self-aggrandising
see also:
boastful braggarta bragginga braggy big crowing 
self-aggrandizing self-aggrandising 

Cock-A-Hoop >> C Words
Cock-A-Hoop, definition of term: Cock-A-Hoop
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