ἰδιοπράγμων

ον, ονος
A. minding one's own business, opp. πολυπράγμων, D.L. 9.112, Ptol. Tetr. 161; βίος Vett. Val.185.6.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project