bellicosity

US /ˌbel.ɪˈkɑː.sɪ.ti/
UK /ˌbel.ɪˈkɑː.sɪ.ti/
"bellicosity" picture
1.

a warlike or hostile nature, disposition, or manner

:
The diplomat's bellicosity surprised everyone at the peace talks.
His constant bellicosity made it difficult to work with him.