by mistake

in error; accidentally. I'm sorry. I came into the wrong room by mistake. I chose the wrong road by mistake. Now we are lost.

without intending to I'm sorry – I dialed your number by mistake.

Erroneously, as in He took my coat by mistake. [c. 1700]

Name	Pronounced	Usage
Aviram	-	Hebrew, Biblical Hebrew
Ozzie	AHZ-ee	English
Yeong-Su	yung-soo	Korean
Summer	['sʌmə]
Marcelinho	-	Portuguese
Hudes	-	Yiddish