συμπράττειν (symprattein)
συμπράττειν is an Ancient Greek form of συμπράσσω, meaning “help to do, cooperate”. It is the present active infinitive.
Found 34 times in the Ancient Greek texts on Socratos.
Where it is used
Plutarch, Theseus 31.2: … ενόμενοι καὶ διελθόντες τὴν Πελοπόννησον ἐποιήσαντο συνθήκας, τὸν μὲν λαχόντα κλήρῳ τὴν Ἑλένην ἔχειν γυναῖκα, συμπράττειν δὲ θατέρῳ γάμον ἄλλον.
All forms of συμπράσσω (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.