A lid, a container with a lid, and a combination of a lid and a container

[Object] to provide a lid body having excellent re-closing properties, and a combination of the lid body and a container. [Solution] a lid body 1 is used in a state where a joint region R attached to an end portion of a container having a mouth portion and an edge portion surrounding the mouth portion is formed so as to cover the mouth portion, and has a body 2 including the joint region. The body is configured so that a portion of the body can be easily displaced 5 relative to the other portion of the body from an edge portion defined on an outer peripheral edge portion of the body; When a part of the body is defined as a first portion 3 and the other part of the body is defined as a second portion 4, the displacement facilitating structure has a guide portion 6 extending along a...