Where does this definition of behind closed doors come from?
This entry for behind closed doors is sourced from Main Dictionary, one of the dictionaries and corpora merged into Lughet.
Is behind closed doors a noun, verb, or something else?
In this entry, behind closed doors is tagged as 2adv..
What is Lughet?
Lughet is a free trilingual dictionary covering nearly five million entries across Uyghur, Chinese, and English, drawn from more than ten source dictionaries and corpora.