Verbs are sometimes combined with adverbs and prepositions
to form a phrase that has a meaning that can’t be worked out from the individual meanings of each of the words.
Give Up
Give up combines the verb give with the
preposition up to form a new verb with several meanings.
It can
mean to stop doing something because it's too difficult.
Example: I
had to give up trying to learn French.
An example...
Or it can mean to resign. Example: You should give up that boring job. 
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