probabilitas
From LSJ
Quibus enim nihil est in ipsis opis ad bene beateque vivendum → Every age is burdensome to those who have no means of living well and happily
Latin > English (Lewis & Short)
prŏbābĭlĭtas: ātis, f. probabilis,
I probability, credibility (class.): magna, Cic. Ac. 2, 24, 75: captiosa, id. Fin. 3, 21, 72: quodcumque nostros animos probabilitate percussit, id dicimus, id. Tusc. 5, 11, 33.