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