The word 蜿蜒 is formed by combining the characters 蜿 and 蜒, both of which include the radical 虫 (insect/creature). 蜿 conveys the sense of bending or curving, while 蜒 implies crawling or meandering. Their union creates a compound where the shared radical emphasizes serpentine, winding motion, resulting in a term that descriptively denotes twisted, sinuous shapes or paths.