cockalorum

/ˌkɑkəˈlɔrəm/
noun
  1. A person who boasts or brags in a self-important way, especially someone of little actual importance.
    • The meeting was dominated by a cockalorum who wouldn't let anyone else speak.
    • Don't be such a cockalorum; your small victory doesn't make you the king of the world.
    • The local cockalorum kept telling everyone how he had single-handedly saved the company, though nobody believed him.
Antonyms
What does "cockalorum" mean? | whatsthatwordmean | whatsthatwordmean