sˈiːnjɚ sˈɪnənˌɪmz ɑːɹ dʒˈɛnɚɹəli jˈuːzd, ɛksˈɛpt baɪ spˈɛʃəl dᵻsˈɪʒən ʌvðɪ ˈaɪkzən, bˌʌt dʒˈuːnjɚ sˈɪnənˌɪmz kænˈɑːt biː jˈuːzd ɐɡˈɛn, ˈiːvən ɪf dˈɛpɹɪkˌeɪɾᵻd.
Senior synonyms are generally used, except by special decision of the ICZN, but junior synonyms cannot be used again, even if deprecated.