Invidious (adjective)

1. Likely to arouse resentment or anger in others; likely to be seen as unfair or discriminatory.
2. Likely to cause resentment or anger in others, especially by being unfair or discriminatory.

Origin:

Early 17th century from latin invidiosus, from invidia "env.y"

Examples:

1. His invidious comparison of the two candidates led to a heated argument.
2. The invidious distinction between the two groups was immediately apparent.
3. The invidious treatment of the minority was unacceptable.
4. He made an invidious distinction between the two groups.
5. The invidious comparisons led to resentment among the team members.