The late __ (person's name or social position)

Context #1:

​I was married to my husband for 37 years. I miss him so much. He passed away 5 years ago. When it rains, I miss him even more...​My late husband used to enjoy his garden, especially after it rained. He was a good man.​

Context #2:

November has been a very sad month in America. Many bad things happened, but for me, the saddest thing was to find out that one of my favorite singer/song writers passed away. He died on November 10th. The late Leonard Cohen was great and ​wrote many of my favorite songs.

Meaning: dead. We use "the late" before a name or title to indicate that person is not alive. If the person is loved and respected, we often use "the late great" before the name or title.

http://languagesystems.edu/

To slip (my, his, her) mind

Context #1:

Terrence dials a number on his cell phone. His friend, Will, answers.

Will: Hello?

Terrence: Will? Where are you?

Will: At home. What are you doing, Terrence?

Terrence: Waiting for you! We agreed to meet in Downtown, remember?

Will: I'm so sorry, Will. It totally slipped my mind. I'm on my way!

 

Context #2:

Linda and John arrive home to find dinner in the oven and ​it's ​burnt.

Linda: John, weren't you supposed to turn the oven off before we left?

John: I guess it slipped my mind.

Meaning: to forget. We use this idiom when we have a thought or intention and that thought or intention "slips away" before it becomes an action. 

http://languagesystems.edu/