Slithered is a word that refers to the movement of snakes and other creatures that move with a sliding motion. In more general terms, it can refer to any smooth, serpentine movement. There are several synonyms for slithered, including glide, slide, worm, creep, sneak, and stream. Each of these words captures a different aspect of the way creatures move smoothly and stealthily through their environment. Glide suggests a gracefulness, while slide is more neutral. Worm connotes a more wriggling movement, while creep and sneak suggest a slow and cautious approach. Finally, stream is appropriate for describing a smooth, flowing motion through water.