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