Bumptious
/ˈbʌmpʃəs/
Definition 1 of 1
Pro Tip 1/3Negative Tone
Bumptious has a negative connotation; used to describe off-putting confidence. 
His bumptious tone during the meeting turned his colleagues off.
Pro Tip 2/3Not Complimentary
Avoid using 'bumptious' for someone you wish to compliment; it implies arrogance. 
Calling her bumptious after her presentation can be perceived as an insult.
Pro Tip 3/3Personal Interactions
Use 'bumptious' to critique social behavior, not professional skills or knowledge. 
His bumptious manner at social events often leads to awkward situations.