The word "presurmised" means to anticipate or conjecture something without having proof of it. It is a slightly formal term that is not often used in everyday conversation. Some synonyms for "presurmised" include inferred, supposed, assumed, surmised, guessed, speculated, and presumed. All of these words indicate a belief or opinion based on incomplete or uncertain information. "Inferred" refers to a conclusion drawn from evidence or clues. "Supposed" implies belief without certain proof. "Assumed" suggests taking something for granted without evidence. "Surmised" means to make an educated guess, while "guessed" implies a more hasty conclusion. "Speculated" and "presumed" both refer to conjecture based on uncertain or incomplete information.