<p><strong>Noun:</strong></p><ul><li>a question or statement so framed as to exercise one's ingenuity in answering it or discovering its meaning; conundrum</li><li>a puzzling question, problem, or matter</li><li>a puzzling thing or person</li><li>any enigmatic or dark saying or speech</li></ul><p><strong>Verb (used without object):</strong></p><ul><li>riddled</li><li>riddling</li><li>to propound riddles; speak enigmatically</li></ul>