Pronunciation: [ɡɹˈuːpəst] (IPA)
Correct spelling for the English word "groupest" is [ɡɹˈuːpəst], [ɡɹˈuːpəst], [ɡ_ɹ_ˈuː_p_ə_s_t] (IPA phonetic alphabet).
Correct spelling for groupest