φοβερόν (phoberon)
φοβερόν is an Ancient Greek form of φοβερός, meaning “fearful, terrible”. It is the accusative singular feminine adjective.
Found 190 times in the Ancient Greek texts on Socratos.
Where it is used
Thucydides, History of the Peloponnesian War 4.61.6: ὅσοι δὲ γιγνώσκοντες αὐτὰ μὴ ὀρθῶς προσκοποῦμεν, μηδὲ τοῦτό τις πρεσβύτατον ἥκει κρίνας, τὸ κοινῶς φοβερὸν ἅπαντας εὖ θέσθαι, ἁμαρτάνομεν.
All forms of φοβερός (declension 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.