Drop out and Fall back

Drop out verb - Give up in the face of defeat of lacking hope; admit defeat.

Fall back and drop out are semantically related. In some cases you can use "Fall back" instead a verb "Drop out".

Fall back verb - To move back or away (as from something difficult, dangerous, or disagreeable).

Drop out and fall back are semantically related. Sometimes you can use "Drop out" instead a verb "Fall back".