peacocky

adjective2

1. •
   Proud and boastful.

   • From his short passes to the hip-length tan winter coat he slipped on after the game, Pennington proved in myriad ways that he was all about being practical, not peacocky. — 2007
2. •
   Of a horse: showy in motion; holding itself high while running.

   • “Samson 4th” was third, a smart, peacocky horse, favoured by his marvellous action, which invariably catches the Judge's eye. — 1882