ἴσθι
From LSJ
οἷς τὰ ὁρώμενα τὴν ἀρχὴν ἐνδίδωσι, καὶ οἷον ὑπήνεμα διὰ τῶν ὀφθαλμῶν τὰ πάθη ταῖς ψυχαῖς εἰστοξεύονται → who taketh his beginning and occasion from something which is seen, and then his passion, as though wind borne, shoots through the eyes and into the heart
English (LSJ)
A know, imper. of οἶδα.
II ἴσθι, be, imper. of εἰμί.
German (Pape)
[Seite 1263] imperat. zu εἰμί, sei, und zu οἶδα, wisse.
French (Bailly abrégé)
impér. de εἰμί;
impér. de οἶδα.
Russian (Dvoretsky)
ἴσθι:
I 2 л. sing. imper. к εἰμί.
II 2 л. sing. imper. к *εἴδω.
Greek (Liddell-Scott)
ἴσθι: γίνωσκε, προστακτ. τοῦ οἶδα. ΙΙ. ἴσθι, ἔσο, προστ. τοῦ εἰμί.
English (Autenrieth)
see εἴδω (II.).
English (Strong)
second person imperative present of εἰμί; be thou: + agree, be, X give thyself wholly to.
Greek Monotonic
ἴσθι:I. μάθε! γνώριζε!, προστ. του οἶδα. II. ἴσθι, να είσαι, προστ. του εἰμί (sum).