εὐθυπορ-έω,
A. go straight forward,πότμος εὐθυπορῶν(metaph. from a ship)unswervingdestiny, A. Ag. 1005 (lyr.); of motion, Arist. IA 710a7 ; opp.ἀνακάμπτειν, ofἀποδείξεις, Id. de An. 407a29 : c. acc. cogn.,εὐ. ὁδόν, δρόμον,hold a straightcourse, Pi. O. 7.91 , I. 5(4).60 .
II. have a straight grain, of trees, Thphr. CP 1.8.4 .