ῥῑγ-έω · rhig-eō — LSJ
shudder, bristle, shudder to do, shrink from doing
shudder or bristle with fear or horror, ἰδὼν ῥίγησε Il. 5.596, etc.; ἐρρίγησαν ὅπως ἴδον 12.208; once in Trag., αἱ δὲ παρθένοι ῥίγησαν (the augm. being omitted although in an iambic verse) S. l.c.: c. inf., shudder to do, shrink from doing, ὄφρα τις ἐρρίγῃσι . . ξεινοδόκον κακὰ ῥέξαι Il. 3.353, cf. 7.114; cf. ἀπορριγέω: folld. by a clause, θυμὸς ἐρρίγει μὴ . . Od. 23.216.
2 cool, slacken in zeal
cool or slacken in zeal, Pi. N. 5.50.
3 bristle
bristle with arms, Φοίνικες . . ἐρρίγαντι Theoc. l.c.
II shudder at
trans., shudder at anything, ῥιγήσειν πόλεμον Il. 5.351; ἔρριγα μάχην 17.175 (in 16.119 ῥίγησέν τε is best taken parenthetically). (Cf. Lat. frīgeo, from srīg-.)