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
Vahagn	-	Armenian Mythology, Armenian
Noah (2)	NO-ə (English)	Biblical
Antwan	an-TWAHN	African American
Nicolau	nee-koo-LOW (Portuguese)	Portuguese, Galician, Catalan
Narayana	-	Hinduism, Indian, Kannada, Telugu, Tamil
Wood	[wud]