1. activist, militant

a militant reformer

• activist

2. hawkish, militant, warlike

disposed to warfare or hard-line policies

Example Sentences:
'militant nations'
'hawkish congressman'
'warlike policies'

• hawkish
• warlike

3. competitive, militant

showing a fighting disposition

Example Sentences:
'highly competitive sales representative'
'militant in fighting for better wages for workers'
'his self-assertive and ubiquitous energy'

• competitive

4. belligerent, militant, war-ridden, warring

engaged in war

Example Sentences:
'belligerent (or warring) nations'

• belligerent
• war-ridden
• warring