Luxuriated in means indulging in pleasure or comfort. Its antonyms, on the other hand, refer to actions that are far from pleasure or comfort. One antonym is suffering, which means undergoing pain or distress. Another is enduring, which means going through hardship or difficulty. Also, struggling can be used as an antonym of luxuriating in. Meaning to work hard towards achieving something, struggling is the opposite of indulging in pleasure or comfort. Finally, the word struggling can be used as an antonym of luxuriating in. Overall, the antonyms of luxuriating in denote discomfort, hardship, and difficulty.