差さし固かためる

ichidan verb, transitive verb

close tightly; shut firmly

Used for physically closing something, such as a door or lid, with force or determination. The second gloss 'to warn sharply' is a rare figurative extension, possibly from the idea of shutting down someone's behavior with a stern warning.

• 彼かれは怒おこってドアを差さし固かためた。