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