σύνεσιν (synesin)
σύνεσιν is an Ancient Greek form of σύνεσις, meaning “understanding, intelligence”. It is the accusative singular feminine noun.
Found 123 times in the Ancient Greek texts on Socratos.
Where it is used
Euripides, Suppliants 203: πρῶτον μὲν ἐνθεὶς σύνεσιν, εἶτα δʼ ἄγγελον
New Testament, Ephesians 3.4: πρὸς ὃ δύνασθε ἀναγινώσκοντες νοῆσαι τὴν σύνεσίν μου ἐν τῷ μυστηρίῳ τοῦ χριστοῦ,
All forms of σύνεσις (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.