One synonym for the word "Yaup" is to "yelp". This means to make a sharp, quick cry or bark that is often high-pitched. Another synonym for "yaup" is to "howl". This term suggests a louder and more sustained noise that is often associated with animals, such as wolves or coyotes. Other synonyms for "yaup" include to "hoot", which often refers to the sound made by an owl, or to "squeal", which is a high-pitched noise often made by excited children. Ultimately, while each of these synonyms has their own unique connotation, they all share a sense of vocalization or sound production.