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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.

Residents are criticizing a state law that requires permits and fees for building projects near Joshua trees, saying it’s opaque, confusing and onerous for those who want to improve or even maintain their properties.

From Los Angeles Times

Recovering money after the fact is so much more onerous than intervening while it’s happening.

From MarketWatch

Chemicals is one of the most important sectors in Europe's biggest economy but key industry players complain of high energy costs, onerous EU regulations and fierce foreign competition.

From Barron's

Other reforms include streamlining the process for collective Cabinet agreement of government policy, which are said to involve "onerous" exchanges of letters between departments.

From BBC

He also pointed out the U.S. proposal has less onerous demands and more generous carrots than pre-war positions.

From MarketWatch