"onerous" in German onerous beschwerlich mühsam umständlich onerös Detailed translations for "onerous" onerous onerous(also: burdensome, troublesome, burdensomely) beschwerlich onerous(also: arduous, arduously, laborious, taxing) mühsam onerous(also: burdensome, troublesome, intricately, long-winded) umständlich onerous(also: burdensome, troublesome) onerös{adjectiv} English synonyms for "onerous" onerous {s} burdensome taxing