challenging
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.
Education Department could make many of these transitions more challenging.
From MarketWatch
Mid and West Wales Fire and Rescue Service said: "The extrication was especially challenging with fuel lines running throughout the aircraft's chassis and aviation fuel stored in its wings."
From BBC
But making these programs a reality is challenging.
From MarketWatch
The trails here are challenging but worthy adventures for experienced hikers to consider.
From Los Angeles Times
That increased sense of reward can help children stick with both challenging and repetitive activities.
From Science Daily
From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.