1
general::
Out of danger and unharmed, as in It was a challenging climb, so I'm relieved they got home safe and sound. [c. 1300]
American Heritage Idioms
2
general::
Phrase(s): safe and sound
unharmed and whole or healthy. • It was a rough trip, but we got there safe and sound. • I’m glad to see you here safe and sound.
McGrawhill's American Idioms And Phrasal Verbs