not easily borne; wearing;
"the burdensome task of preparing the income tax return"
"my duties weren't onerous; I only had to greet the guests"
"a taxing schedule"
- Overtime work is often onerous, though it is well paid.
- She desired a fixed occupation-no matter how onerous, how irksome.
- I've always led an onerous timetable but I like it.
The final terms..were onerous, and involved my taking great risks.出自： S. Unwin
Greece and its people have a role of great honour fraught with onerous responsibility.出自：Antiquity