- characterized by or tending toward unprovoked offensives, attacks, invasions, or the like; militantly forward or menacing: aggressive acts against a neighboring country.
- making an all-out effort to win or succeed; competitive: an aggressive basketball player.
- vigorously energetic, especially in the use of initiative and forcefulness: an aggressive salesperson.
- boldly assertive and forward; pushy: an aggressive driver.
- emphasizing maximum growth and capital gains over quality, security, and income: an aggressive mutual fund.
- (of a disease or tumor) spreading rapidly or highly invasive; difficult or impossible to treat successfully.
- pertaining to a risky surgery or treatment, or to a medication that has grave side effects: aggressive chemotherapy.
Origin of aggressive
SynonymsSee more synonyms on Thesaurus.com
1. pugnacious, militant. 2. forceful, enterprising, assertive.
1. friendly. 2. retiring, shy, timid, hesitant.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for aggressiveness
Nothing compares to the lack of transparency, and the aggressiveness of this administration.Was Reporter Sharyl Attkisson Too Right-Wing for CBS?
October 29, 2014
It serves us well in our home city, but perhaps gives us an unwanted air of paranoia and aggressiveness in, say, Hailey, Idaho.The Aurora Shooting Made One Prominent Hollywood Producer Too Scared to Go to The Multiplex
August 26, 2012
And the Gulf is just one front with Iran while on others increasing Iranian aggressiveness worries U.S. military commanders.Shocking Gulf Firefight Caught on Tape
July 5, 2011
Presidents like Teddy Roosevelt and Lyndon Johnson wore their aggressiveness as a badge of honor.The Upside of Bullying
February 23, 2010
May it teach them some lessons of restraint as well as of aggressiveness!Where Half The World Is Waking Up
These wars in the South were incited by the insolence and aggressiveness of the Americans.
His boldness and aggressiveness were unique in the history of Indian warfare.
Now her stinging tongue was dumb, and there was no aggressiveness in her manner.'Me-Smith'
Madame's husband instantly showed a diminution of aggressiveness.Love at Paddington
W. Pett Ridge
- quarrelsome or belligerentan aggressive remark
- assertive; vigorousan aggressive business executive
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
Word Origin and History for aggressiveness
Online Etymology Dictionary, © 2010 Douglas Harper
- Characterized by aggression.
- Inclined to behave in a hostile fashion.
- Tending to spread quickly, as a tumor; fast-growing.
- Characterized by or inclined toward vigorous or intensive medical treatment.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.