δυσωρήσωνται is another hapax legomenon, appearing only in Iliad 10, but we can understand why it might only appear once in our extant Homeric epics from the simile’s interaction with its context. Although in other parts of the poem there are similes describing predatory animals attacking domestic flocks at night, and the retaliation of men and dogs (see e.g. Iliad 11.546–557), here the simile is for a particularly “painful” night watch. It is painful both because the young men on guard duty have had an extremely hard day of fighting and because the Trojans are camped out for the first time, closer than ever, during this night. (See also the commentary on 10.331 for more on words that appear only in Iliad 10.)