Aggressive:

Adjective

Meaning:

Displaying a strong, forceful, and often hostile or confrontational behavior or attitude.

Characteristics:

• Intense emotional expression
• Readiness to attack or confront
• Tendency to overpower or dominate
• Quick to react aggressively
• Assertive behavior

Synonyms:

• Belligerent
• Pugnacious
• Militant
• Combative
• Hostile

Antonyms:

• Pacifistic
• Passive
• Nonviolent
• Peaceful
• Amicable

Example:

The aggressive dog growled and lunged at the intruder, displaying its territorial instincts.