副词

1. 彻底地;完全地
If someone is soundly defeated or beaten, they are severely defeated or beaten.

2. (决定、观点或陈述等)正确地，明智地，可靠地
If a decision, opinion, or statement is soundly based, there are sensible or reliable reasons behind it.

3. 酣睡地;熟睡地
If you sleep soundly, you sleep deeply and do not wake during your sleep.

1. completely and absolutely (`good' is sometimes used informally for `thoroughly')

e.g. he was soundly defeated
we beat him good

Synonym: thoroughlygood

2. deeply or completely

e.g. slept soundly through the storm
the baby is sleeping soundly