problematically

/ˌprɑbləˈmætɪkli/
adverb
  1. In a way that causes or involves problems; in a difficult or questionable manner.
    • She problematically assumed everyone agreed with her plan.
    • The project was problematically delayed due to lack of funding.
    • The data was problematically incomplete, making the results unreliable.
Antonyms