Abstract: A capped container is provided, which maintains, by a simple fastening structure, like a conventional one, sufficient sealability inside and prevents contents from leaking outside an opening of a container body when opening while fastening a cap and a container, and also prevents the leakage, even when an expected large force is applied to the cap in an opening direction. Included are the container body with outer screws on an outer peripheral surface of a head section, and the cap with inner screws threadedly engaged therewith on an inner peripheral surface, placed on and removed from the head section of the container body by screw-fitting. Provided are a first fastening means by clickstop including a cap-side annular projection interengaged with the cap on the container body, and a second fastening means by clickstop including pluralities of container body- and cap-side projections on the container body and in the cap, respectively.