by force, forcibly; against someone's will
彼は無理やり部屋に入った。
He forced his way into the room.
人を無理やり閉じ込めるなんてできるわけがないだろ？
There's no way I could force someone to stay locked up, right?
— ライフ・イズ・ビューティフル (1997)
彼らは私に無理やり署名させた。
They forced me to sign.
彼は無理やり残業させられた。
He was forced to work overtime.
彼らは彼に無理やり手紙に署名させた。
They forced him to sign the letter.