φρεσίν (phresin)
φρεσίν is an Ancient Greek form of φρήν, meaning “midriff; heart, mind (pl. φρένες)”. It is the dative plural feminine noun.
Found 130 times in the Ancient Greek texts on Socratos.
Where it is used
Apollonius Rhodius, Argonautica 2.950: δωσέμεναι, ὅ κεν ᾗσι μετὰ φρεσὶν ἰθύσειεν.
Homeric Hymns, Hymn 4 to Hermes 66: ὁρμαίνων δόλον αἰπὺν ἐνὶ φρεσίν, οἷά τε φῶτες
All forms of φρήν (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.