Forgetting

to be unable to remember something clearly

He asked me for my phone number and I drew a blank -I just couldn't remember it.

to often forget things due to one's exceptionally poor memory

Oh, I forgot to buy the bread - I've got a brain like a sieve these days!

a time so long ago that one has difficulty remembering clearly

The ruins of the castle had been standing there, time out of mind, overlooking the valley.

to no longer be angry with someone who wronged one and act as if nothing happened

After their argument, they decided to forgive and forget, focusing on repairing their friendship.

to fail to remember what one previously knew

The doctor's mind went blank when she realized that the patient's heart had stopped beating.

temporary loss of memory that is experienced by some people when they get old

I had a senior moment and couldn't remember where I left my car keys.

(of something that happened) really difficult to remember how long has passed since it happened to one

For all that we've learned about these ancient structures, most of their purpose has been lost in the mists of time.