Pronunciation: [ɡɹˈɔ͡ɪnɪŋ] (IPA)
Correct spelling for the English word "groyning" is [ɡɹˈɔ͡ɪnɪŋ], [ɡɹˈɔɪnɪŋ], [ɡ_ɹ_ˈɔɪ_n_ɪ_ŋ] (IPA phonetic alphabet).