to make something stronger ,,
It means things are trustworthy.
say no to it
About to be sold, or given up.
To make a mistake
It means shut up!
pay attention.
To keep struggling and not give up.
flatter her to get something
he suddenly turned up (to appear, emarge)
It's not an idiom. To break camp means to break it up, to pack your things and leave the area. It can be used as slang, however, to mean a group "packing up" and leaving.
The idiom buck up means to cheer up. For example one might say "she began to buck up once I showed her some photographs of her children when they were younger."
It means to concede defeat and stop trying.