ἴσθι (isthi)

ἴσθι is an Ancient Greek form of οἶδα, meaning “to know”. It is the 2nd person singular perfect active imperative.

Found 354 times in the Ancient Greek texts on Socratos.

Where it is used

Diogenes Laertius, Vitae philosophorum 1.2.54: … , οὐδʼ ἔφυγες. ἐπάνιθι τοίνυν οἴκαδε, πιστεύων μοι καὶ ἀνωμότῳ, ἄχαρι μηδὲν πείσεσθαι Σόλωνα ἐκ Πεισιστράτου. ἴσθι γὰρ μηδʼ ἄλλον τινὰ πεπονθέναι τῶν ἐμοὶ ἐχθρῶν. εἰ δὲ ἀξιώσεις τῶν ἐμῶν φίλων εἷς εἶναι, ἔσῃ ἀνὰ πρώτους· οὐ …

Julian, Emperor of Rome, To the Cynic Heracleios 22·4: … άνος; ὁ δέ, Καὶ ταῦτα, εἶπε, μόγις ἐκτησάμην· οὐδεὶς γὰρ ἦν ὁ ξυμπονῶν ἐν τῇ τῶν συγγενῶν οἰκίᾳ παρερριμμένῳ. Ἴσθι οὖν, εἶπεν ὁ μέγας Ἥλιος, ὅτι σε πάντως χρὴ ἐπανελθεῖν ἐκεῖσε. ἐνταῦθα ἐδεῖτο μὴ πέμπειν αὐτὸν ἐκεῖσε πάλιν, …

All forms of οἶδα (conjugation table)

Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Liddell-Scott-Jones, A Greek-English Lexicon (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.