The phrase "fixt upon" means to focus or gaze intently at something. The opposite of this phrase would be to look away or avoid looking at something. Some antonyms for "fixt upon" are ignore, neglect, disregard, glance away or avert. When one's gaze is fixed upon something, they pay attention to it and focus their thoughts on it. Whereas when someone averts their gaze, they look away or redirect their attention to something else. The antonyms of "fixt upon" describe an action that is the complete opposite, as they involve turning away from something instead of paying attention to it.