"Wriggler" is a word that describes something or someone that moves in a wriggling motion. There are several synonyms that describe the same type of movement. For instance, "squirm" is a very common synonym that is often used interchangeably with "wriggle." "Twist" is another synonym that describes movement that is similar to a wriggle, except the movement is more pronounced and involves a more complex kind of motion. "Slink" is another synonym that suggests a stealthy and smooth kind of movement, which can be associated with the movement of a wriggler. Other synonyms for "wriggler" include "wiggle," "snake," "fidget," "crawl," and "slither," among others.