concertator
From LSJ
ἀσκεῖν περὶ τὰ νοσήματα δύο, ὠφελεῖν ἢ μὴ βλάπτειν → strive, with regard to diseases, for two things — to do good, or to do no harm | as to diseases, make a habit of two things — to help, or at least, to do no harm
Latin > English (Lewis & Short)
concertātor: ōris, m. concerto,
I one who contends or vies with another, a rival: concertator Corbulonis: scientiā militiae (corresp. with aemulus), Tac. A. 14, 29.
Latin > French (Gaffiot 2016)
concertātŏr,¹⁶ ōris, m. (concerto),
1 rival : Tac. Ann. 14, 29
2 compagnon de lutte : Aug. Serm. 297, 4, 6.
Latin > German (Georges)
concertātor, ōris, m. (concerto), der Wetteiferer nach einem Ziele, der Nacheiferer, a) in polit. Beziehung, der Nebenbuhler, Corbulonis, Tac. ann. 14, 29. – b) in moral. Beziehung, Augustin. serm. 276, 6. Cassiod. hist. eccl. 1, 14.