IPA: /kənˈsiːlmənt/
KK: /kənˈsilmənt/
The act of keeping something hidden or secret from others.
The concealment of the evidence made it difficult for the investigators to solve the case.
Concealment → It is formed from "con-" (meaning together) and "celare" (meaning to hide). The word refers to the act of hiding something together or in a unified manner, thus creating a state of being hidden.
Think of 'hiding' ('celare') something 'together' ('con-') — that's why concealment means the act of hiding.