conjecture

mastery
UK /kənˈd͡ʒɛk.t͡ʃə(ɹ)/ US /kənˈd͡ʒɛk.t͡ʃɚ/nounverb

card 1 of 6 · synonym

Which word is closest in meaning to 'conjecture' in this sentence?

His conjecture about the market trends turned out to be correct.