We found 19 dictionaries that define the word riddler:

General (13 matching dictionaries)

1. riddler: Merriam-Webster
2. riddler: Oxford Learner's Dictionaries
3. riddler: Collins English Dictionary
4. Riddler, riddler: Wordnik
5. riddler: Wiktionary
6. Riddler, riddler: Dictionary.com
7. Riddler (The Batman), Riddler, The Riddler (Idaho), The Riddler (song), The Riddler: Wikipedia, the Free Encyclopedia
8. Riddler: Online Plain Text English Dictionary
9. riddler: Webster's Revised Unabridged, 1913 Edition
10. Riddler: AllWords.com Multi-Lingual Dictionary
11. riddler: Webster's 1828 Dictionary
12. riddler, the riddler: FreeDictionary.org
13. Riddler: TheFreeDictionary.com

Business (1 matching dictionary)

14. riddler: Legal dictionary

Computing (1 matching dictionary)

15. riddler: Encyclopedia

Miscellaneous (2 matching dictionaries)

16. RIDDLER, RIDDLER, RIDDLER: Terminology and Descriptions of Geneaological Words
17. riddler: Idioms

Slang (1 matching dictionary)

18. Riddler, The Riddler: Urban Dictionary

Tech (1 matching dictionary)

19. Riddler: Coin Collecting

(Note: See riddle as well.)

Definitions from Wiktionary (riddler) ▸ noun:  One who asks riddles; a puzzler. ▸ noun:  One who riddles or sieves (grain, sand, etc.). Similar: unriddler, puzzler, puzzlist, perplexer, puzzlemaster, jigsaw puzzler, enigmatologist, enigmatist, enigmatographer, solutionist, more... Opposite: answerer, solver, decoder Types: enigma, conundrum, puzzle, brainteaser, teaser, paradox, more... Phrases: Riddler in other media, more... ▸ Words similar to riddler ▸ Usage examples for riddler ▸ Idioms related to riddler ▸ Wikipedia articles (New!) ▸ Popular adjectives describing riddler ▸ Words that often appear near riddler ▸ Rhymes of riddler ▸ Invented words related to riddler