rīvālĭtas, ātis, f. [rivalis, II. B.],
rivalship , rivalry in love (cf. aemulatio, rivalry in gen.), Cic. Tusc. 4, 26, 56; between women, Ap. Met. 10, 24, 4: rivalitatem non amat victoria, P. Syri Sent. 575 Rib.
rīvālitās ātis, f rivalis, jealous hostility, rivalry : aemulatio rivalitati similis. ...
An Elementary Latin Dictionary