Final answer:
Antinous mistreats Odysseus by insulting him, denying his requests for assistance, and physically assaulting him, demonstrating a lack of respect and hospitality during Odysseus's return to Ithaca in 'The Odyssey'.
Step-by-step explanation:
In Homer's epic, The Odyssey, Antinous, one of the suitors vying for Penelope's hand, treats Odysseus poorly by hurling insults, rejecting his requests, and eventually assaulting him. This callous treatment occurs when Odysseus returns to his home in Ithaca disguised as a beggar and seeks hospitality among the suitors consuming his estate. Antinous' demeaning behavior exemplifies his character as arrogant and disrespectful, qualities that eventually lead to his downfall when Odysseus reveals his true identity and takes revenge upon the suitors for their transgressions.