na-adjective
militaristic; militant; by force of arms
Describes an approach, policy, or attitude that relies on military force or coercion rather than diplomacy or persuasion. Often used in political or historical contexts.
その国は武断的な外交政策をとっている。
That country adopts a militaristic foreign policy.
武断的な手段で問題を解決しようとするのは危険だ。
Trying to solve problems by militaristic means is dangerous.
強硬 means 'hardline' or 'tough' in stance, but does not necessarily imply military force; 武断的 specifically suggests a militaristic or coercive approach.
Compound of 武断 (military decision, rule by force) and the adjectival suffix 的 (-like). 武断 itself combines 武 (military, martial) and 断 (decision, judgment).