The word "outpoise" can be quite challenging to find synonyms for due to its unique and specific meaning. However, there are some words that can be used to describe a similar idea. For example, the term "outbalance" can be used to mean having greater weight or importance than something else. Similarly, "outmatch" can describe being superior or better in a competition or comparison. "Outstrip" can be used to indicate surpassing someone or something in speed, progress, or efficiency. Other possible synonyms for "outpoise" may include "outclass," "outshine," and "outperform." All of these words can help convey the idea of being superior or standing out in some way.