Synonyms of guessing

1 Syllable
hunch
2 Syllables
fancy, guesswork
3 Syllables
presuming, positing, surmise, assumption, theorizing, presumption, opinion, deduction, assuming, reckoning, prognostic
4 Syllables
inference, estimating, speculation, conjectural, suppositions, predictive, postulating, supposition
5 Syllables
imagination, predisposition
6 Syllables
prognosticative