Scrawniest is a word that describes someone or something as being extremely thin, frail or bony. However, there are several other words that can be used to convey the same meaning, such as emaciated, gaunt, lanky, thin as a rail, cadaverous, anorexic, skeletal, undernourished, wasted, or twiggy. These words may be used interchangeably with scrawniest depending on the context of the sentence and the kind of character being described. Whether you're writing a book, creating a game or just looking for an alternative way to describe a thin person or thing, these synonyms will help you convey the desired message.