Webster 1913 Edition
In a sound manner.
Webster 1828 Edition
2.Severely; lustily; with heavy blows; smartly; as, to beat one soundly.
3.Truly; without fallacy or error; as, to judge or reason soundly.
4.Firmly; as a doctrine soundly settled.
5.Fast; closely; so as not to be easily awakened; as, to sleep soundly.