secretly; treacherously
Ancient Greek word, found 15 times in the texts on Socratos.
Theocritus, Εἰδύλλια 1.96: λάθρια μὲν γελάοισα, βαρὺν δʼ ἀνὰ θυμὸν ἔχοισα,
Callimachus, Hymn to Apollo 105: ὁ Φθόνος Ἀπόλλωνος ἐπʼ οὔατα λάθριος εἶπεν
Greek Anthology, Greek Anthology, Ἀνθολογία, Volume III 9.296.3: Νηρῆος λαθρίοισιν ὑποπλεύσας τενάγεσσι,