onerous
onerous a. (1)过度繁重的;引起困难的 (2)负有的责任或义务超过所得利益的 (3)(大陆法)具有相当对价的;有偿的
onerous (oh-n[schwa]r-[schwa]s oron-[schwa]r-[schwa]s), adj. 1. Excessively burdensome or troublesome; causing hardship (onerous discovery requests). 2. Having or involving obligations that outweigh the advantages ( onerous property). 3. Civil law. Done or given in return for something of equivalent value; supported by consideration (an onerous contract). Cf. GRATUITOUS(1). — onerousness, n.