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Synonyms

onerous

American  
[on-er-uhs, oh-ner-] / ˈɒn ər əs, ˈoʊ nər- /

adjective

  1. burdensome, oppressive, or troublesome; causing hardship.

    onerous duties.

    Synonyms:
    galling , irksome , grievous , heavy
  2. having or involving obligations or responsibilities, especially legal ones, that outweigh the advantages.

    an onerous agreement.


onerous British  
/ ˈəʊ-, ˈɒnərəs /

adjective

  1. laborious or oppressive

  2. law (of a contract, lease, etc) having or involving burdens or obligations that counterbalance or outweigh the advantages

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • nononerous adjective
  • nononerously adverb
  • nononerousness noun
  • onerosity noun
  • onerously adverb
  • onerousness noun
  • unonerous adjective
  • unonerously adverb
  • unonerousness noun

Etymology

Origin of onerous

1350–1400; Middle English < Latin onerōsus, equivalent to oner- (stem of onus ) burden + -ōsus -ous

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Mueller said that requirement is “not very reasonable,” and that ISPs typically don’t comply due to how onerous it would be.

From The Wall Street Journal

Lawmakers greatly reduced the number of European companies that would face onerous new reporting requirements by increasing the company-size thresholds at which the rules kick in.

From The Wall Street Journal

Some of the biggest obstacles facing Germany’s military planners are intangible: ponderous procurement rules, onerous data protection laws, and other regulations forged in a more peaceful era.

From The Wall Street Journal

But onerous regulations, especially on the handling of data, and political disagreements within Europe have hobbled the emergence of European players on a scale to rival their U.S. competitors.

From The Wall Street Journal

Most people assume that estate planning is hard — that it’s complicated, expensive and onerous.

From MarketWatch