The word "guess" refers to the act of making an estimate or forming an opinion about something without having sufficient information to be certain. It often involves a degree of uncertainty, where one relies on intuition or incomplete data to arrive at an answer. For example, if someone is unsure of the answer to a trivia question, they might "guess" a response rather than knowing it for sure.
The word "guess" comes from the Old English word "gȳsian," which means "to judge, estimate, or form an opinion." Its roots can be traced back to the Proto-Germanic "*gwasōną," which implies a sense of speculation or estimation.