Where does this definition of be firm in come from?
This entry for be firm in is sourced from Main Dictionary, one of the dictionaries and corpora merged into Lughet.
Is be firm in a noun, verb, or something else?
In this entry, be firm in is tagged as 2v..
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.