bellow [bˈɛləʊ] n

bellowing [bˈɛləʊˌɪŋ] n

holla [hˈɒlə] n

holler [hˈɒlə] n

hollering [hˈɒləɹˌɪŋ] n

hollo [hˈɒləʊ] n

holloa [hɒlˈəʊə] n

roar [ɹˈɔː] n

roaring [ɹˈɔːɹɪŋ] n

yowl [jˈaʊl] n