The Collaborative International Dictionary
Boggler
Boggler \Bog"gler\, n. One who boggles.
Wiktionary
boggler
n. 1 One who boggles. 2 Something puzzling or confusing.
Usage examples of "boggler".
What mysteries has fiction produced to rival mind bogglers like deep geological time, a boundless universe, the big bang, relativity, quantum mechanics, the double helix, natural selection, mass extinction, the language instinct, and chaos theory?