When describing something that resembles a spider, the term spider-shaped is commonly used. However, there are a variety of other synonyms that can be utilized to accurately describe this shape. Consider using words such as arachnid, crane fly, daddy-long-legs, or eight-legged to convey a similar meaning. Alternatively, you could describe the shape as having a spidery appearance, or as a spider-like form. Other options include utilizing adjectives such as leggy, webby, or intricate to further add detail and description to the object in question. Regardless of which synonym you choose, be sure to select the one that best conveys the image you have in mind.