Definition of riddler in English:

riddler

Pronunciation /ˈrid(ə)lər/ /ˈrɪd(ə)lər/

noun

See riddle

‘Mullen forces us to act and react as language's riddlers and addicts: ‘as shadow as promised/as drinking fountain as well/as grassfire as myself/as mirror as is/as never as this.’’
  • ‘Logically speaking, the additional information is essential for the answer the riddler wants.’