Pronunciation: [ˈɪɹə͡ʊ] (IPA)
Correct spelling for the English word "IRRO" is [ˈɪɹə͡ʊ], [ˈɪɹəʊ], [ˈɪ_ɹ_əʊ] (IPA phonetic alphabet).
Correct spelling for IRRO