From + -ism.

• (British) IPA: /ˈbɛlɪsɪzm̩/

bellicism (uncountable)

1. An inclination to war; warlike policy or behaviour.
   • 1962, Michael Howard, The Causes of Wars, page 271:

     One cannot understand the causes of the First World War unless one appreciates the degree of bellicism in European society at that time, especially in Central Europe […].

   • 2003, Timothy Patrick Jackson, The Priority of Love, page 126:

     Today the phrase "holy war" suggests a no holds barred fanaticism, a form of unbridled bellicism.

   • 2012, Christopher Clark, The Sleepwalkers, Penguin, published 2013, page 295:

     Not all of France was inundated by the nationalist wave – it was predominantly young, intelligent Parisians who embraced the new bellicism […].

• militarism
• warism
• warmongerism

• pacifism

• bellicist
• bellicose

• French: bellicisme
• German: Bellizismus, Kriegstreiberei
• Italian: bellicismo
• Russian: вои́нственность
• Spanish: belicismo