suru verb (precursor), transitive verb
Archaic transitive verb, precursor to modern 脅す (おどす). Found in classical texts; not used in modern Japanese.
古語では「嚇す」と書いて「かくす」と読み、おどす意味で使われた。
In classical Japanese, 嚇す was read かくす and used to mean 'to threaten'.