problematical
1. [ adjective ] open to doubt or debate
Synonyms: problematic debatable
Examples:

"If you ever get married, which seems to be extremely problematic"

Related terms: questionable
2. [ adjective ] making great mental demands; hard to comprehend or solve
Synonyms: knotty baffling problematic
Examples:

"a baffling problem" "I faced the knotty problem of what to have for breakfast" "a problematic situation at home"

Related terms: difficult
Similar spelling:   problematically
  problematic
  problem_solver
  problem_solving