in one piece
if you arrive somewhere in one piece, you are not injured

[TahlilGaran] Dictionary of Contemporary English ▲

safe not harmed or damaged:
The children are all safe.
OK/all right informal safe and not hurt:
I was glad to hear that you were OK.
unharmed not hurt:
The kidnappers released the young man unharmed.
unscathed /ʌnˈskeɪðd/ not hurt or damaged, after an accident, an attack, or a dangerous experience – used when you are surprised by this:
The baby escaped unscathed.
Miraculously, the old part of the city remained unscathed.
in one piece informal not harmed or damaged, especially after a journey or a dangerous experience:
I’m glad you’re home in one piece.
out of danger safe, after being in a dangerous situation:
As soon as they were out of danger, they stopped for a rest.
His doctors say he is out of danger.

[TahlilGaran] English Thesaurus ▲

safe not in danger of being harmed, lost, or stolen. Also used about a place where someone or something is safe:
I don’t feel safe around here.
Keep your valuables in a safe place.
secure if something is secure, it is safe from thieves and criminals. Also used about a place where something is safe:
How do I know that my personal details are secure?
The money is in a very secure place.
well protected not likely to be damaged or harmed by something:
The equipment was well protected from the rain.
Always make sure that you are well protected from the sun.
out of harm’s way in a place where someone or something cannot be hurt or damaged:
She put the glass vases on the top shelf, out of harm’s way.
Make sure that he stays out of harm’s way.
OK/all right informal safe and not hurt:
I was glad to hear that you were OK.
unharmed not hurt:
The kidnappers released the young man unharmed.
unscathed /ʌnˈskeɪðd/ not hurt or damaged, after an accident, an attack, or a dangerous experience – used when you are surprised by this:
The baby escaped unscathed.
Miraculously, the old part of the city remained unscathed.
in one piece informal not harmed or damaged, especially after a journey or a dangerous experience:
I’m glad you’re home in one piece.
out of danger safe, after being in a dangerous situation:
As soon as they were out of danger, they stopped for a rest.
His doctors say he is out of danger.

[TahlilGaran] English Thesaurus ▲

in one piece
not injured or damaged.
I'm glad the kids arrived home in one piece from school.

Etymology: based on the idea of an object that is not broken

[TahlilGaran] English Idioms Dictionary ▲