Question

slip one's mind Sorry I didn't send out that memo last Friday. To be honest with you, it slipped my mind.note: Notice that the subject is "it" in the expression "it slipped my mind," making this the passive voice. It's like this unknown "it" is responsible for the fact that you forgot to do something. In contrast, "I forgot" is the active voice. You are taking more responsibility (and possibly more blame) when you say, "I forgot."

Accepted Answer

be forgotten

Idiom	slip one's mind
Meaning	be forgotten
Example	Sorry I didn't send out that memo last Friday. To be honest with you, it slipped my mind. note: Notice that the subject is "it" in the expression "it slipped my mind," making this the passive voice. It's like this unknown "it" is responsible for the fact that you forgot to do something. In contrast, "I forgot" is the active voice. You are taking more responsibility (and possibly more blame) when you say, "I forgot."

Slipped Voice I Slip One's Mind Forgotten Send