Pronunciation: [ˌɑːbɪtɹˈe͡ɪʃənə͡l] (IPA)
Correct spelling for the English word "arbitrational" is [ˌɑːbɪtɹˈe͡ɪʃənə͡l], [ˌɑːbɪtɹˈeɪʃənəl], [ˌɑː_b_ɪ_t_ɹ_ˈeɪ_ʃ_ə_n_əl] (IPA phonetic alphabet).
Correct spelling for arbitrational