General term for the impression one forms about a person, situation, or event. Often used in contexts like 心証を害する (to hurt someone's impression/feelings).
His attitude left a bad impression on me.
It's important to make a good impression when meeting someone for the first time.
judge's conviction; strong belief (legal)
Legal term referring to the firm belief or conviction formed by a judge based on evidence. Used in phrases like 心証を取る (to form a conviction).
The judge formed a conviction of the defendant's guilt from the evidence.
principle of free evaluation of evidence; free conviction principle
Compound of 心 (heart, mind) and 証 (proof, evidence), literally 'mind-proof'. The legal sense derives from the idea of evidence-based conviction.