(任务、责任等)繁重的;艰巨的;令人负担沉重的。(常带有“费力、麻烦、压力大”的含义)
/ˈɒnərəs/
The paperwork for the application was onerous.
这份申请的文书工作很繁琐、很费力。
The new regulations imposed an onerous set of reporting requirements on small businesses, leaving many owners overwhelmed.
新规给小企业施加了一套繁重的申报要求,令许多经营者不堪重负。
onerous 来自拉丁语 onus(“负担、重担”),后经法语进入英语。其核心意象是“背负重物”,引申为“负担沉重、令人吃力的”。