bumptious
/ˈbʌmpʃəs/
adjective
- Self-assertive or conceited in a noisy, overbearing way; pushy and full of oneself.
- The new intern was so bumptious that nobody wanted to work with him.
- Her bumptious attitude at the meeting annoyed even her closest friends.
- He gave a bumptious speech, bragging about his achievements before anyone asked.