Or search: guess, concept, surmise, proposal, supposal, surmisal, construct, framework, conjecture, divination, speculation, supposition, historicism, hypothetical
3 Syllables: SUU
cautiously, colonies, comedies, Hippocrates, lotteries, oddities, policies, polities, prodigies, prophecies, prophecy, prophesied, qualities, robberies, Socrates, Sophocles
4 Syllables: USUU
anomalies, anthologies, apologies, apostasy, apostrophe, atrocities, biographies, commodities, democracies, Diogenes, economies, incautiously, monopolies, philosophies, philosophy, technologies, velocities
5 Syllables: UUSUU
animosities, Aristophanes, bibliographies, curiosities, genealogies, ideologies, methodologies

Found 40 words across 3 groupings.