unpleasant /ʌnˈplez.ənt/ /ʌnˈpleznt/
disagreeable /ˌdɪsəˈgriəbəl/ /ˌdɪsəˈgrɪəbl/
distasteful
undesirable /ˌʌndɪˈzaɪərəbl/ /ˌʌndɪˈzaɪərəbl/