na-adjective
multilateral; many-sided; diversified
Describes approaches, analyses, or negotiations that consider multiple perspectives or parties. Common in business, politics, and academic contexts.
問題を多角的に検討する必要がある。
We need to examine the problem from multiple angles.
多角的
We heard opinions from a multilateral perspective.
Compound of 多 (many) + 角 (angle) + 的 (-like, adjectival suffix). The exact historical derivation is uncertain, but the word follows a common pattern for forming adjectival nouns from Sino-Japanese roots.