1. resembling or characteristic of a rooster; having the qualities of a cock
Usage: informal; chiefly British
2. bold, confident, or assertive in manner; strutting or swaggering
Usage: informal; dated

Examples

• He had a cockish strut as he walked across the room.
• The young athlete's cockish attitude annoyed his teammates.
• She gave a cockish tilt of her head before answering.
• His cockish manner masked his underlying insecurity.
• The rooster's cockish behavior was typical during mating season.