To provide a polymerizable composition excellent in curability under a humid condition such as in an oral cavity, the polymerizable composition includes a first component and a second component, the first component includes cumene hydroperoxide as a peroxide in (meth)acrylate, the second component includes a thiourea derivative as a reductant and a vanadium compound as a polymerization accelerator in (meth)acrylate and the vanadium compound is preferably one or more kinds selected from vanadium acetylacetonate, vanadyl acetylacetonate, vanadyl stearate, vanadium naphthenate, and vanadium benzoyl acetonate.
