What is another word for speculation?
Pronunciation: [spˌɛkjʊlˈe͡ɪʃən] (IPA) 
Speculation refers to an opinion or theory that is based on incomplete information or guesses. It is commonly used in financial terms, where people make speculative investments based on limited knowledge. There are several synonyms for speculation that can be used to replace the word in different contexts. These synonyms include conjecture, assumption, supposition, theory, hypothesis, guess, presumption, and inference. Conjecture and assumption are used to suggest an idea based on incomplete evidence, while hypothesis and theory are used to suggest a more backed-up and scientific idea. Supposition, guess, and presumption, on the other hand, are more speculative in nature and rely entirely on guesswork.
