1.to be of good courage, take courage, Il., etc.:—in bad sense, to be over-bold, audacious, Thuc., Plat.; θάρσει, θαρσεῖτε, take courage! cheer up, Hom., etc.; θαρσήσας with good courage, Il.; so, θαρσῶν Hdt., attic:—also, τὸ τεθαρρηκός confidence, Plut.
2.c. acc., θάρσει τόνδε γ᾽ ἄεθλον take heart for this struggle, Od.; θ. θάνατον Plat.; θ. μάχην to venture a fight, Xen.:—c. acc. pers. to have confidence in, id=Xen.:—so also, θαρσεῖν τινι Hdt.
3.c. inf. to believe confidently that, Soph.; also, to make bold or venture to do, Xen.