What Does It Mean?

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From our dictionary:
in•vid•i•ous

(in-vid'E-us),
adj.
1. calculated to create ill will or resentment or give offense; hateful: invidious remarks.
2. offensively or unfairly discriminating; injurious: invidious comparisons.
3. causing or tending to cause animosity, resentment, or envy: an invidious honor.
4. Obs. envious.