ἔκπαγλος

Etymology
. Possibly related to πλάγια (flanks of an army), πλαγγ- (send astray). Probably not related to plango, πλήσσω. (Beek, "The development of the Proto-Indo-European syllabic liquids in Greek," 2013)

Adjective

 * 1)  terrible, violent
 * 2)  marvelous, wondrous