[ uh-gres-iv ]
/ əˈgrɛs ɪv /
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) growing or spreading rapidly; highly invasive; difficult or impossible to treat successfully: aggressive brain lesions.
- pertaining to a risky surgery or treatment, or to a medication that has grave side effects: aggressive chemotherapy.
(of a plant) spreading more rapidly than is desirable; tending to spread where not wanted: The joe-pye weed may be too aggressive to contain in the small area you’ve designated.
SYNONYMS FOR aggressive
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Origin of aggressive
First recorded in 1690–1700; from Late Latin aggressīvus, derivative of Latin aggressus, past participle of aggredī “to go to, approach, attack”
OTHER WORDS FROM aggressive
ag·gres·sive·ly, adverbag·gres·sive·ness, ag·gres·siv·i·ty [ag-re-siv-i-tee], /ˌæg rɛˈsɪv ɪ ti/, nounan·ti·ag·gres·sive, adjectivehy·per·ag·gres·sive, adjective
o·ver·ag·gres·sive, adjectiveo·ver·ag·gres·sive·ness, nounsu·per·ag·gres·sive, adjectiveun·ag·gres·sive, adjectiveun·ag·gres·sive·ness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
British Dictionary definitions for aggressive
/ (əˈɡrɛsɪv) /
quarrelsome or belligerentan aggressive remark
assertive; vigorousan aggressive business executive
Derived forms of aggressiveaggressively, adverbaggressiveness, noun
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
Medical definitions for aggressive
[ ə-grĕs′ĭv ]
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.