Decuplet is a term used to describe a group of ten things or individuals, however, there are several synonyms for this word. One of the commonly used synonyms is a "decahedron" which is a polyhedron with ten faces. Another synonym could be "tenfold", which refers to ten times or ten in quantity or number. Other synonyms include "ten-piece," "a group of ten," "decuple," and "tenfold." Furthermore, the word "tenth" could also be used as a synonym for decuplet, especially when referring to a fraction or percentage. Additionally, "decimation" could be seen as a synonym since it means the destruction or removal of a tenth part. Overall, decuplet is just one of many words that describe a group of ten things, and there are several alternatives that could be used interchangeably.