ON THE QT

On the qt (slang) is short for quiet. It means 'not openly; confidential'

Example:


I can't have everyone over, so I am keeping my b party on the QT.

LET UP

Let up = ease off; subside; stop.


Celebrities cannot have a nice calm dinner anywhere in town because their fans will do anything to have a word with them. They won't let up no matter what. That can be annoying!

or


Girl I know you're fed up but things gonna get a lot 

better / Don't wanna see you give up, whatever you 

do, don't let up / Girl I know that things are hard now
 

rapgenius.com/Akon-dont-let-up-lyrics

LIVE UP TO

Try to figure out the meaning from context. It will be child's play.

I hate when people don't live up to their online profile picture.

or

Faithful pray Pope Francis will live up to his name


Read more at http://www.toledoblade.com/World/2013/03/31/Faithful-pray-Pope-Francis-will-live-up-to-his-name.html#hSROcDlR8eaK14lH.99 

or also

I'm not in this world to live up to your expectations and you're not in this world to live up to mine.

Bruce Lee

Read more at http://www.brainyquote.com/quotes/quotes/b/brucelee153187.html#WAftVZBJmHQklWJo.99 

SAVE FACE

=

to keep the respect or reputation

eg.

One insensitive tweet and the company had to apologize several times to save face.

or

How to Save Face When Things Go Wrong

In my professional life I have found that when one mishap occurs with a client several more will follow. The succeeding chain-of-events tend to be embarrassing and aggravating. Worse yet, we sometimes feel like never showing up for business again. But we all know that won’t work, so what will?

http://www.personalbrandingblog.com/how-to-save-face-when-things-go-wrong/