What's the adjective for swaggering? Here's the word you're looking for.
Included below are past participle and present participle forms for the
verbs swag and swagger which may be used as adjectives within certain contexts.
“After winning the local talent show, the young singer's swaggering attitude quickly became unbearable, as she believed she held the utmost superiority over her peers.”
“He entered the room with a swaggering attitude, boasting about his accomplishments to anyone who would listen.”