The term "cocky" refers to a person who is overly confident, arrogant or conceited. It can also refer to someone who behaves in an assertive manner that may come across as boastful or self-assured.
Usage examples
He walked into the room with a cocky swagger, exuding confidence and self-assuredness.
Sarah's cocky attitude annoyed her classmates, as she constantly bragged about her accomplishments.
Despite being a rookie, the young football player displayed a cocky demeanor on the field, taunting his opponents with his superior skills.
The CEO's cocky remarks during the press conference came across as arrogant and dismissive of others' perspectives.
Jake's cocky behavior got him into trouble when he underestimated his opponent's abilities and lost the competition.
Don't get too cocky with a woman as that seldom improves your chances of getting her interested in you. (tinderalternatives.com)
The man I would like to meet is confident and self assured, but isn't cocky with an over-inflated ego. (blackmillionairesingles.com)
He's not quite as cocky as Tony Stark in the «Iron Man» pictures, but he has definitely grown into his suit and all the responsibilities that come with it. (chron.com)