Kristyna Brabencova added 10 points and six rebounds, and Elisa Pinzan had a career-high 11 assists for South Florida (5-1, 2-0 American Athletic Conference).
Thomas, who entered fourth in the nation at 27.4 points per game, scored 32 points with six rebounds, five assists and four steals for Cincinnati (1-5, 0-2). She scored 30-plus for third time this season, and moved into sole possession of eighth in program history, passing Jolinda Lewis (1,523).
USF moved up three spots in the AP Top 25 poll on Monday despite not playing since opening AAC play against Memphis on Dec.