This expressions means to give up or quit.

This is what happens when you accept something without fighting back.

To reject  someone or something (e.g. a proposal or idea) 

If someone loses or wastes something, it is said to have "gone __________".

A "ballpark figure" is a rough estimate or approximation.

This means to do things according to company policy or the law.

The e-commerce industry is such a __________ business. Sellers are often forced to accept razor thin margins in order to survive.

The client was _________ getting their way and refused to listen to any other offers. 

If something failed or ended without any achievement, we can say it ____________.

This expressions refers to the succession of both good and bad experiences.

The expression "______ arms" means that you eagerly oppose or protest something.

The event staff ___________ brochures to all the visitors as they entered the exhibition hall.  

To “tough it out” means to persist through a difficult situation.

This means to make something stronger or more effective - especially a rule or law or to become involved in something with great energy and enthusiasm.

"Chomping at the bit" means to be impatient over some delay and/or eager for something to happen.

I never imagined that someday I might have to ________ with my former colleague for the new job opening.

Wow, I was only gone for a a minute and it looks like you all _______ that pizza. There's only one slice left!

This expression refers to a thoroughly complex or difficult mystery, problem, puzzle, or riddle.

"_________ the radar" means to be ignored or forgotten in favor of something more important; or to disappear from public view.

"Contingent on" something carries the same meaning as being dependent of something.