We found one dictionary that defines the word speak in riddles:

Phrases: talk speak in riddles, more... ▸ Words similar to speak in riddles ▸ Usage examples for speak in riddles ▸ Idioms related to speak in riddles ▸ Wikipedia articles (New!) ▸ Words that often appear near speak in riddles ▸ Rhymes of speak in riddles ▸ Invented words related to speak in riddles