'cock-a-hoop' definitions:

Definition of 'cock-a-hoop'

(from WordNet)
adjective
Exhibiting self-importance; "big talk" [syn: boastful, braggart(a), bragging(a), braggy, big, cock-a- hoop, crowing, self-aggrandizing, self- aggrandising]

Definition of 'cock-a-hoop'

From: GCIDE
  • cock-a-hoop \cock`-a-hoop"\, a. Boastful; defiant; exulting. Also used adverbially.
  • Syn: boastful, braggart(prenominal), bragging(prenominal), braggy, big, crowing, self-aggrandizing, vainglorious. [1913 Webster]