noun
insufficient evidence
Legal term used in criminal procedure when the evidence is not enough to establish guilt or proceed with prosecution.
嫌疑不十分で不起訴となった。
The case was dropped due to insufficient evidence.
証拠不十分 is a more general term for insufficient evidence, while 嫌疑不十分 is specifically used in legal contexts regarding the lack of grounds for suspicion.
Compound of 嫌疑 (suspicion) and 不十分 (insufficient). The exact historical derivation is uncertain; the term is used in modern legal contexts.