civil; private-law
Used in legal or formal contexts to describe matters related to civil law, as opposed to criminal or administrative law. Often appears in phrases like 民事的な問題 (civil matter) or 民事的責任 (civil liability).
We should aim for a civil resolution to this problem.
Pursue civil liability.
刑事的 means 'criminal' (as in criminal law), the opposite of 民事的 in legal contexts.
Formed from 民事 (civil affairs) + 的 (-like, -ic), a common pattern for creating adjectival nouns from nouns.