Definition of unpeaceably in English:

unpeaceably

Pronunciation /(ˌ)ʌnˈpiːsəbli/

adverb

rare
  • In an unpeaceable manner; restlessly, hostilely, violently.

Origin

Late Middle English; earliest use found in The Wycliffite Bible (early version). From unpeaceable + -ly, after peaceably.