This is the 7309th most frequent Japanese word.
乱暴
Violent, reckless, or rude.
乱暴 is used as an adverb (乱暴に) to describe the manner of handling objects.
彼は物を乱暴に扱った。
He handled the objects roughly.
乱暴 is used as an adjective (乱暴な) to characterize the driving style as reckless.
そんな乱暴な運転をしてはいけない。
You must not drive so recklessly.
乱暴 is used as a noun (乱暴者) to depict someone as being rough or aggressive.