slip (one's) memory

(redirected from slip his memory)

slip (one's) memory

To be forgotten, especially of an obligation. I'm sorry I didn't call you back sooner, it totally slipped my memory. I'm worried about mom—things keep slipping her memory lately.
See also: memory, slip
References in classic literature ?
"But you can't spare the time to come with him, and if he should forget himself and lose his way and somebody spoke to him sharply, his name and address may slip his memory, and he'll remain lost for days and days - "