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onerous

on·er·ous [ ónnərəss, ṓnərəss ]


adjective 
Definition:
 
1. difficult: representing a great burden or much trouble

2. having disadvantageous obligations: involving obligations that are more disadvantageous than advantageous

[14th century. Via Old French onéreux< Latin onerosus< oner-, stem of onus "burden"]

on·er·ous·ly adverb
on·er·ous·ness noun
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