πρακτέος

ον

πράσσω

A. to be done, Pl. Prt. 356c, etc.
II. πρακτέον, one must do, S. OT 1439, Pl. Prt. 356b, etc.
2. one must exact, χρήματα X. Hier. 8.9.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project