Or search: dearth, famine, deficit, shortage, exiguity, leanness, shortness, tightness, scantness, scantiness, stringency, scarceness, slenderness, insufficiency
3 Syllables: SUU
Byzantine, differently, distantly
4 Syllables: USUU
consistency, consistently, deficiency, efficiencies, efficiency, efficiently, Epiphany, exigencies, exigency, indifferently, insistently, persistency, persistently, proficiency, sufficiency, sufficiently
5 Syllables: UUSUU
aborigines, inconsistency, inefficiency, insufficiency, insufficiently

Found 24 words across 3 groupings.