Depraved is a synonym of abandoned.

As verbs the difference between depraved and abandoned

is that depraved is (deprave) while abandoned is (abandon).

As adjectives the difference between depraved and abandoned

is that depraved is describing a person or action that is perverted or extremely wrong in a moral sense while abandoned is self-abandoned, or given up to vice; immoral; extremely wicked, or sinning without restraint; irreclaimably wicked ; as, an abandoned villain {{defdate|first attested from 1350 to 1470}}{{reference-book | last =| first = | authorlink = | coauthors = | editor =brown, lesley | others = | title = the shorter oxford english dictionary | origdate = | origyear = 1933| origmonth = | url = | format = | accessdate = | accessyear = | accessmonth = | edition = 5th | date = | year =2003| month = | publisher =oxford university press | location =oxford, uk | language = | id = | doi = | isbn =978-0-19-860575-7 | lccn = | ol = | pages =2| chapter = | chapterurl = | quote =}}.