ταχυγράφος
From LSJ
νοεῖν γάρ ἐστι κρεῖττον καὶ σιγὴν ἔχειν → it's better, you see, to understand and yet say nothing (Menander)
English (LSJ)
[γρᾰ], ὁ,
A shorthand writer, Lyd.Mag.3.6, Stud.Pal. 20.247.2 (vi/vii A.D.):—hence τᾰχῠ-γρᾰφέω, write shorthand, Tz.H.8.267, Eust.1607.10.