Advanced and Proficiency Vocabulary for Exams(e.g.GRE, Banks, Civil Services, SAT / LSAT). For IELTS/TOEFL, and everyday spoken vocabulary, go to our Spoken Vocabulary Database.

onerous | onerousness | onerously

onerous onerousness onerously
something difficult or unpleasant to do
  • How to Memorize
    • onerous - difficult
  • Analysis

    If something is ‘onerous’, then it is challenging and requires a lot of effort to complete. The term also implies that the arduous task you are doing is made worse by the fact that you find it unpleasant or distasteful. This formal word is most commonly used in a professional context.

  • Exam DBSpoken DBOther
    Synonymsarduousburdensome, strenuous,
    Antonymseffortless, painless, undemanding,
  • Example(s)
    1. Deciding which employees should be let go was an onerous duty. I wish I didn’t have to make those decisions.

    2. Due to the onerousness of the task, I felt I had to do it myself rather than burden somebody else with it.

    3. The risks involved in the operation remain onerously high. As it stands, I just don’t feel safe being involved.