Synonyms for Mortifying (same or very similar meaning)
WordNet sense 1 (causing to feel shame or chagrin or vexation):
embarrassingWordNet sense 2 (disagreeable to the senses, to the mind, or feelings ):
unpleasantWordNet sense 3 (causing awareness of your shortcomings):
demeaning, humbling, humiliatingWordNet sense 4 (lacking dignity):
undignifiedFrom the ODE community, based on WordNetadd/edit