Or search: plus, asset, clout, favor, favour, tennis, vantage, leverage, expedience, expediency, positivity, superiority, favorableness, profitableness, favourableness
3 Syllables: SUU
amethyst, bandages, damages, languages, manages, sandwiches, vanishes
4 Syllables: UUSU
disadvantages

Found 8 words across 2 groupings.