Or search: stormy, deafening, thunderous
3 Syllables: SUU
clumsily, company, functionally, Hungary, nunnery, somebody, summaries, summary, sumptuously, wonderfully
4 Syllables: USUU
abundantly, accompany, effrontery, perfunctory, redundancy, triumphantly, uncomfortably

Found 17 words across 2 groupings.