The term "more upended" refers to something that is further tilted or turned over. Antonyms for this phrase could be "right-side up," which means that the object is in its proper position, or "level," which suggests that the surface is even and flat. Another antonym for "more upended" could be "stable," implying that the object is firmly anchored and not prone to toppling over. In contrast, "unstable" would describe something that is likely to tip or fall over easily. Overall, the antonyms for "more upended" convey a sense of balance, security, and stability, rather than disorientation or instability.