μηδὲν κοτυλίζειν, ἀλλὰ καταπάττειν χύδην → not to sell by the cupful, but to dole out indiscriminately | not to sell by retail but wholesale
spy: P. and V. κατάσκοπος, ὁ; see spy.
traveller: P. and V. ὁδοιπόρος, ὁ.