The word "slenderish" refers to something that is slightly slim or thin in form. Some synonyms for this word are lean, slender, thin, and svelte. Other synonyms that can be used include lanky, willowy, dainty, delicate, and trim. These words are often used to describe people, objects, or creatures that have a sleek and graceful appearance. They can also be used to describe a particular quality or attribute. For instance, a person may be referred to as "slenderish" due to their toned physique or their elegant movements. In conclusion, there are many synonyms that can be used in place of the word "slenderish" to convey the same meaning.