συναμύνω
From LSJ
ἀσκεῖν περὶ τὰ νοσήματα δύο, ὠφελεῖν ἢ μὴ βλάπτειν → strive, with regard to diseases, for two things — to do good, or to do no harm | as to diseases, make a habit of two things — to help, or at least, to do no harm
English (LSJ)
[ῡ], fut.
A ξυναμῠνῶ E.IA62:—join in assisting, τινι l.c.:—Med., Eratosth.Cat.33, Ael.NA3.46.