problematic[adjective]Synonyms: tricky, debatable, doubtful, dubious, problematical, puzzling
Antonyms: unproblematic
[TahlilGaran] English Synonym Dictionary ▲
prob‧lem‧at‧ic /ˌprɒbləˈmætɪk◂ $ ˌprɑː-/
adjective involving problems and difficult to deal with:
The reforms could turn out to be highly problematic. [TahlilGaran] Dictionary of Contemporary English ▲