Meaning : Open to doubt or debate.
Example :
If you ever get married, which seems to be extremely problematic.
Synonyms : debatable, problematic
Meaning : Making great mental demands. Hard to comprehend or solve or believe.
Example :
A baffling problem.
I faced the knotty problem of what to have for breakfast.
A problematic situation at home.
Synonyms : baffling, elusive, knotty, problematic, tough