1. the quality or state of being noisy, energetic, and exuberant; rowdy or unrestrained behavior

Examples

• The boisterousness of the crowd at the concert made it hard to hear the music.
• Children's boisterousness during recess is normal and healthy.
• The team's boisterousness in the locker room after winning the championship was infectious.
• She appreciated his boisterousness, though it sometimes overwhelmed quieter guests.
• The boisterousness of the party lasted well into the night.
• His natural boisterousness made him popular with his classmates.