As nouns the difference between abandon and recklessness
is that
abandon is a yielding to natural impulses or inhibitions; freedom from artificial constraint, with loss of appreciation of consequences while
recklessness is the state or quality of being reckless or heedless, of taking unnecessary risks.
As a verb abandon
is (obsolete) to subdue; to take control of
[. ]
As an adverb abandon
is (obsolete|not comparable) freely; entirely.