Onerous — synonyms, definition

1. onerous (a)

afflictive arduous burdensome crushing demanding difficult exacting excessive exhausting exigent fatiguing frightful galling grievous grinding gruelling hard harsh heartbreaking heavy • • •

2. onerous (Adjective)

onerous (Adjective) — Not easily borne; wearing. ex. "my duties weren't onerous; I only had to greet the guests"