"Wiriest" is an adjective that typically describes something or someone as thin, lean, or slender. There are several synonyms to convey a similar meaning to this word. One option is "gauntest", which refers to a person or animal being extremely thin and bony. Another alternative is "slimmest", often used to describe someone who is attractively thin. "Skinniest" is also an option, specifically emphasizing extreme leanness. "Leanest" can be used to describe a person or object that is both thin and strong. Lastly, "emaciated" suggests a severe and unhealthy thinness. All these synonyms encompass the essence of "wiriest" by describing someone or something as thin and slender.