Abstract: A tamper-evident closure construction for a container with a neck having a discharge opening therein includes a base cap having a base wall and a nozzle portion projecting from the base wall and an annular flange projecting radially outwardly from the nozzle portion adjacent to the base wall and having a frustoconical first cam surface thereon and a flat planar first stop surface thereon. The construction also includes an overcap with a cylindrical, flexible and resilient skirt connected to the base wall by a circular array of frangible webs, and having a flat planar second stop surface at the distal end thereof and an annular groove mateably receiving the annular flange and defining a frustoconical second cam surface engaging the first cam surface.