Dictionary.com
Thesaurus.com
Synonyms

aggressive

American  
[uh-gres-iv] / əˈgrɛs ɪv /

adjective

  1. characterized by or tending toward unprovoked offensives, attacks, invasions, or the like; militantly forward or menacing.

    aggressive acts against a neighboring country.

    Synonyms:
    militant, pugnacious
    Antonyms:
    friendly
  2. making an all-out effort to win or succeed; competitive.

    an aggressive basketball player.

    Synonyms:
    assertive, enterprising, forceful
    Antonyms:
    hesitant, timid, shy, retiring
  3. vigorously energetic, especially in the use of initiative and forcefulness.

    an aggressive salesperson.

  4. boldly assertive and forward; pushy.

    an aggressive driver.

  5. emphasizing maximum growth and capital gains over quality, security, and income.

    an aggressive mutual fund.

  6. Medicine/Medical.

    1. (of a disease or tumor) growing or spreading rapidly; highly invasive; difficult or impossible to treat successfully.

      aggressive brain lesions.

    2. pertaining to a risky surgery or treatment, or to a medication that has grave side effects.

      aggressive chemotherapy.

  7. (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.


aggressive British  
/ əˈɡrɛsɪv /

adjective

  1. quarrelsome or belligerent

    an aggressive remark

  2. assertive; vigorous

    an 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

Other Word Forms

  • aggressively adverb
  • aggressiveness noun
  • aggressivity noun
  • antiaggressive adjective
  • hyperaggressive adjective
  • overaggressive adjective
  • overaggressiveness noun
  • superaggressive adjective
  • unaggressive adjective
  • unaggressiveness noun

Etymology

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”

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.

Early in the season, he was so aggressive he got into foul trouble.

From Los Angeles Times

The pair would go on to record a total of 14 albums through 1973, with Lavoe’s talents for improvisation complementing Colón’s raw, aggressive trombone.

From Los Angeles Times

However, the company behind the test, Grail, said there were still positive signs in the data that some of the most aggressive cancers could be prevented.

From BBC

Pollock, who can play across the back row, also enjoys playing on the edge, adding that he plays best when "aggressive and confrontational".

From BBC

"If you see some videos of how they used to play, it was almost like they were dancing around the court, it wasn't aggressive," he explains.

From BBC