pop quiz pop out • pop safety valve · · · Info · Definitions · Characters · · pop quiz · · Text Common · · Latin · · Scripts 8 · · Length 3 · · Syllables Definitions · · · (noun) a quiz given without prior warning. Synonyms: pop quiz. · · Noun Definition 1 Characters · · space U+0020 i latin small letter i U+0069 o latin small letter o U+006F p latin small letter p U+0070 q latin small letter q U+0071 u latin small letter u U+0075 z latin small letter z U+007A