careful investigation; thorough scrutiny
Used for a detailed, careful examination or inquiry, often in formal or official contexts.
事件の真相を明らかにするため、警察はかんしんを続けている。
The police are continuing a careful investigation to uncover the truth of the case.
This matter requires a bit more thorough scrutiny.
The kanji 勘 means 'intuition' or 'perception', and 審 means 'judge' or 'examine'. The compound suggests a careful, discerning investigation, but the exact historical derivation is uncertain.