τετρεμαίνω
From LSJ
φιλοσοφώτερον καὶ σπουδαιότερον ποίησις ἱστορίας ἐστίν: ἡ μὲν γὰρ ποίησις μᾶλλον τὰ καθόλου, ἡ δ' ἱστορία τὰ καθ' ἕκαστον λέγει → poetry is something more scientific and serious than history, because poetry tends to give general truths while history gives particular facts
English (LSJ)
redupl. form of τρέμω, τετρεμαίνειν Ἀττικῶς, τρέμειν Ἑλληνικῶς Moer.p.365 P.; cf. τετραμαίνω.