φυλάσσεσθαι (phylassesthai)
φυλάσσεσθαι is an Ancient Greek form of φυλάσσω, meaning “guard, watch; (mid.) be on guard against”. It is the present middle/passive infinitive.
Found 49 times in the Ancient Greek texts on Socratos.
Where it is used
Thucydides, History of the Peloponnesian War 4.61.5: καὶ τοὺς μὲν Ἀθηναίους ταῦτα πλεονεκτεῖν τε καὶ προνοεῖσθαι πολλὴ ξυγγνώμη, καὶ οὐ τοῖς ἄρχειν βουλομένοις μέμφομαι, ἀλλὰ τοῖς ὑπακούειν ἑτοιμοτέροις οὖσιν· πέφυκε γὰρ τὸ ἀνθρώπειον διὰ παντὸς ἄρχειν μὲν τοῦ εἴκοντος, φυλάσσεσθαι δὲ τὸ ἐπιόν.
Cassius Dio Cocceianus, Historia Romana 44.18.4: ἔχειν. τό τε σύμπαν οὕτως ἐθάρσει ὥστε καὶ πρὸς τὸν μάντιν τὸν τὴν ἡμέραν ἐκείνην φυλάσσεσθαί ποτε αὐτῷ προαγορεύσαντα εἰπεῖν ἐπισκώπτων “ποῦ δῆτά σου τὰ μαντεύματα; ἢ οὐχ ὁρᾷς ὅτι τε ἡ ἡμέρα ἣν ἐδεδίεις …
All forms of φυλάσσω (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.