in safety

[Lucretia]

Hello,
This sentence from a school textbook struck me as odd:
They got home in safety.
I’d like to know if is synonymous to They got home safely, which I suppose was meant.

Thank you.

[Rusty]

Hello,
This sentence from a school textbook struck me as odd:
They got home in safety.
I’d like to know if is synonymous to They got home safely, which I suppose was meant.

Thank you.
The sentence is OK grammatically, but it does sound unusual. I would understand it as synonymous.

[Lucretia]

Thank you, Rusty.