Invidious

Adjective

1. Causing ill will, envy, or offense.
2. Offensively or unfairly discriminating.
3. Envious, jealous.
4. Detestable, hateful, or odious. (Often used in cases of perceived unfairness, or when facing a difficult situation or choice — especially in the phrase invidious position.)

   "The sales representative was in an invidious position: she could either get to the meeting on time but with nothing to show the client, or pick up the product samples while the client was kept waiting. Neither one would make a favourable impression!"