συγκαταπίπτω
From LSJ
τοῦ εἰδέναι χάριν ἡ πραγματεία → knowledge is the object of our inquiry, the aim of our investigation is knowledge
English (LSJ)
A fall down along with, σ. ταῖς τύχαις let one's spirits fall with one's fortunes, D.H.Isoc.9; ταῖς διανοίαις become despondent too, Onos.13.2; fall together in battle, J.AJ7.7.1; in wrestling, Gal.Nat.Fac.3.3.