Definition of "unsparing" []

• Unmerciful; severe: an unsparing superior officer; unsparing criticism. (adjective)
• Not frugal; generous. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "DiCaprio, who has long been fascinated by Viking culture, will play one in a storyline that will be as "unsparing" as Gibson's other period directing efforts: Braveheart, Passion of the Christ and Apocalypto."
• "The South's President Lee Myung-bak, during a visit to front-line troops Thursday, said that South Korea must make "unsparing" retaliation if it suffers another surprise attack."
• "The South pledges "unsparing" retaliation, while the North threatens "sacred" nuclear war."