Problematic is a synonym of perplexing.
As adjectives the difference between problematic and perplexing
is that problematic is posing a problem; difficult to overcome or solve while perplexing is confusing or puzzling.
As a noun problematic
is (chiefly|in the plural) a problem or difficulty in a particular field of study.
As a verb perplexing is
.
problematic
English
Adjective
(head)
posing a problem; difficult to overcome or solve
debatable; open to doubt
unresolved or dubious
doubtful or uncertain in its outcome
Noun
(
en noun)
(chiefly, in the plural) A problem or difficulty in a particular field of study