There are several synonyms which can be used interchangeably with the phrase "more bottomsideup". One alternative is "inverted", indicating a reversed or flipped position. Another option is "upside down", suggesting an object that is turned over or flipped on its head. Additionally, the term "reversed" can be used to describe something that is opposite in order or orientation. "Flipped" is another synonym that denotes the act of turning something over completely. Lastly, the phrase "topsy-turvy" can be employed to describe a state of disorder or confusion, reflecting the concept of being more bottomsideup. All these synonyms convey a similar sense of being in an inverted or reversed position.