What does "soundly" mean? Is it referring that Heidi snored loudly?
Native speaker’s answer
Rebecca
"Soundly" means deeply or completely. "Soundly" is usually used to describe sleeping, but "soundly" can also be used to describe other things as well. In this video, Heidi is in a deep sleep. Ex: She is sound asleep. Ex: The team was soundly defeated during their last game.