Pronunciation: [ɪnd͡ʒˈʌst] (IPA)
Correct spelling for the English word "injust" is [ɪnd͡ʒˈʌst], [ɪndʒˈʌst], [ɪ_n_dʒ_ˈʌ_s_t] (IPA phonetic alphabet).
Correct spelling for injust