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Synonyms

challenging

American  
[chal-in-jing] / ˈtʃæl ɪn dʒɪŋ /

adjective

  1. offering a challenge; testing one's ability, endurance, etc.

    a challenging course;

    a challenging game.

  2. stimulating, interesting, and thought-provoking.

    a challenging suggestion.

  3. provocative; intriguing.

    a challenging smile.


ˈchallenging British  
/ ˈtʃælɪndʒɪŋ /

adjective

  1. demanding or stimulating

    a challenging new job

"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

  • challengingly adverb
  • nonchallenging adjective
  • unchallenging adjective

Etymology

Origin of challenging

First recorded in 1300–50; Middle English, as a gerund; 1835–45 for sense of "testing one's ability"; challenge ( def. ), -ing 2 ( def. )

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.

Huang said a goal of the US commerce secretary to have 40 percent of US chips made domestically will be "very challenging" to achieve given how fast demand is growing.

From Barron's

New research reveals that bull sharks form social relationships with specific "friends," challenging the long-standing belief that these predators live mostly solitary lives.

From Science Daily

However, commercializing such technologies has been challenging, due to fiscal and regulatory hurdles in the healthcare industry.

From The Wall Street Journal

A lawsuit challenging semiannual reporting is likely, but the SEC looks like it’s on solid legal ground, so companies probably will be able to opt into semiannual reporting starting next year, according to Seiberg.

From MarketWatch

Such a task would have uncertain prospects and would likely require the biggest and most technically challenging special-forces operation in history.

From The Wall Street Journal