Present participle of 'aggrieve': causing someone to feel wronged, treated unfairly, or hurt.
From 'aggrieve' (Old French 'agrever') plus the present participle suffix '-ing.' The root concept of making something 'heavy' or burdensome remains embedded in the meaning.
The continuous form 'aggrieving' suggests an ongoing process of being wronged, which is psychologically accurate—injustice often isn't a single moment but a pattern that keeps happening and keeps hurting.
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