Sense

1. (of time) now, at this time
2. (of the recent past) just now
3. (constrasting what might have been) as it is, as it stands

Examples

• καὶ εἶπεν Ἀδάμ. τοῦτο νῦν ὀστοῦν ἐκ τῶν ὀστέων μου καὶ σὰρξ ἐκ τῆς σαρκός μου. αὕτη κληθήσεται γυνή, ὅτι ἐκ τοῦ ἀνδρὸς αὐτῆς ἐλήφθη αὕτη. (Septuagint, Liber Genesis 2:23)
• καὶ εἶπεν ὁ Θεός. ἰδοὺ Ἀδὰμ γέγονεν ὡς εἷς ἐξ ἡμῶν, τοῦ γινώσκειν καλὸν καὶ πονηρόν. καὶ νῦν μή ποτε ἐκτείνῃ τὴν χεῖρα αὐτοῦ καὶ λάβῃ ἀπὸ τοῦ ξύλου τῆς ζωῆς καὶ φάγῃ καὶ ζήσεται εἰς τὸν αἰῶνα. (Septuagint, Liber Genesis 3:22)
• καὶ νῦν ἐπικατάρατος σὺ ἀπὸ τῆς γῆς, ἣ ἔχανε τὸ στόμα αὐτῆς δέξασθαι τὸ αἷμα τοῦ ἀδελφοῦ σου ἐκ τῆς χειρός σου. (Septuagint, Liber Genesis 4:11)
• καὶ εἶπε Κύριος. ἰδοὺ γένος ἓν καὶ χεῖλος ἓν πάντων, καὶ τοῦτο ἤρξαντο ποιῆσαι, καὶ νῦν οὐκ ἐκλείψει ἀπ᾿ αὐτῶν πάντα, ὅσα ἂν ἐπιθῶνται ποιεῖν. (Septuagint, Liber Genesis 11:6)
• ἱνατί εἶπας ὅτι ἀδελφή μου ἐστί; καὶ ἔλαβον αὐτὴν ἐμαυτῷ γυναῖκα, καὶ νῦν ἰδοὺ ἡ γυνή σου ἔναντί σου. λαβὼν ἀπότρεχε. (Septuagint, Liber Genesis 12:19)

Source: Ancient Greek entries from Wiktionary