It means the person it is directed at deserves the best, and nothing but the best.
Other than that, it can be used just to say this is the best I have to offer, hope you appreciate it.
Also it can be used in a sarcastic manner, of course.
The best meaning for dereliction is to neglect or be negligent, careless.
The suffix -phobia means an extreme or irrational fear or aversion to something.
meaning the best
The meaning of the poem Do the Best of Whatever You Are is to take pride in your work. It doesn't matter what you do, if you do the very best you can at that job, then you can be proud of your work.
Khair-meaning best Wara-pious, Godfearing Khairulwara-best of the pious ones.
the best of the rest
It can kill you
the best,
forboding
Best friend
of Exonerate
Champion, best-of-the-best, to strive for excellence