Pronunciation: [ɹˈe͡ɪnɪ] (IPA)
Correct spelling for the English word "Reyney" is [ɹˈe͡ɪnɪ], [ɹˈeɪnɪ], [ɹ_ˈeɪ_n_ɪ] (IPA phonetic alphabet).
Correct spelling for Reyney