aggressive

adjective

ag·​gres·​sive ə-ˈgre-siv 

1

a

: tending toward or exhibiting aggression

aggressive behavior

b

: marked by combative readiness

an aggressive fighter

2

a

: marked by obtrusive energy and self-assertiveness

a rude, aggressive personality

b

: marked by driving forceful energy or initiative : enterprising

an aggressive salesman

3

: strong or emphatic in effect or intent

aggressive colors

aggressive flavors

4

: growing, developing, or spreading rapidly

aggressive bone tumors

5

: more severe, intensive, or comprehensive than usual especially in dosage or extent

aggressive chemotherapy

aggressively adverb

aggressiveness noun

aggressivity

ˌa-ˌgre-ˈsi-və-tē 

noun

Synonyms

• combative
• hostile
• contentious
• militant
• confrontational
• assaultive
• irritable
• belligerent

Choose the Right Synonym for aggressive

aggressive, militant, assertive, self-assertive mean obtrusively energetic especially in pursuing particular goals.

aggressive implies a disposition to dominate often in disregard of others' rights or in determined and energetic pursuit of one's ends.

aggressive in his business dealings

militant also implies a fighting disposition but suggests not self-seeking but devotion to a cause, movement, or principle.

militant protesters rallied against the new law

assertive suggests bold self-confidence in expression of opinion.

the more assertive speakers dominated the forum

self-assertive connotes forwardness or brash self-confidence.

a self-assertive young upstart

Examples of aggressive in a Sentence

He started to get aggressive and began to shout.

an aggressive lawyer whose tactics have made people angry

The team plays a very aggressive style of defense.

The company took aggressive steps to prevent illegal use of their equipment.

The publisher has been very aggressive in promoting the book.

The city began an aggressive campaign to encourage recycling.

an aggressive form of cancer

Recent Examples on the Web

Potential Fed chair David Zervos backs an aggressive rate cut. —Yeo Boon Ping, CNBC, 15 Aug. 2025

Poor oral hygiene allows plaque bacteria to produce acids that contribute to decay, while aggressive brushing can physically wear away the enamel surface. —Thomas Westerholm, MSNBC Newsweek, 15 Aug. 2025

The former Calle 13 member impresses her sensitivity to this piece, originally written by Orlando Brito and popularized in 1975 by the great Héctor Lavoe, giving it new life with her powerful, dramatic voice, accompanied by street guitars and harsh, aggressive chords that captivate the listener. —Jessica Roiz, Billboard, 15 Aug. 2025

Pricing context: Apple has targeted aggressive entry pricing; the current entry model starts at $349. —Dave Smith, Fortune, 14 Aug. 2025

Word History

Etymology

borrowed from New Latin aggressīvus, from Latin aggressus, past participle of aggredī "to step up to, approach, attack" + -īvus -ive — more at aggress

First Known Use

1695, in the meaning defined at sense 1a

Phrases Containing aggressive

• hyper-aggressive
• passive-aggressive

Rhymes for aggressive

• compressive
• concessive
• depressive
• excessive
• expressive
• impressive
• obsessive
• oppressive
• possessive
• progressive
• recessive
• regressive

Kids Definition

aggressive

adjective

ag·​gres·​sive ə-ˈgres-iv 

1

a

: showing readiness to attack

an aggressive dog

b

: practicing aggression

an aggressive nation

2

: being forceful in getting things done

an aggressive sales campaign

3

: growing, developing, or spreading rapidly

aggressive weeds

aggressively adverb

aggressiveness noun

Medical Definition

aggressive

adjective

ag·​gres·​sive ə-ˈgres-iv 

1

: tending toward or exhibiting aggression

aggressive behavior

2

: growing, developing, or spreading rapidly

aggressive bone tumors

3

: more severe, intensive, or comprehensive than usual especially in dosage or extent

aggressive chemotherapy

aggressive surgical intervention

compare conservative

aggressively adverb

aggressiveness noun

aggressivity

ˌag-ˌre-ˈsiv-ət-ē 

noun

plural aggressivities