boggle

1. (transitive or intransitive) (literally or figuratively) to stop or hesitate as if suddenly seeing a bogle.Examples: "The dogs went on, but the horse boggled at the sudden appearance of the strange beast."; "The horror of the deed and its consequences boggle the imagination."; "You boggle shrewdly, every feather starts you […]"intransitivetransitive

2. (intransitive) To be bewildered, dumbfounded, or confused.Examples: "He boggled at the surprising news."; "The mind boggles."; "[…] we start and boggle at what is unusual: and like the Fox in the fable at his first view of the Lyon, we cannot endure the sight of the Bug-bear, Novelty."intransitive

3. (transitive) To confuse or mystify; overwhelm.Examples: "The vastness of space really boggles the mind."; "The oddities of quantum mechanics can boggle the minds of students and experienced physicists alike."; "For a moment he marvelled at the vastness of the toe-sized teats boggling him, then he stuttered, ‘Goo’ bye.’"transitive

4. (US, dialect) To embarrass with difficulties; to palter or equivocate; to bungle or botchUSdialectal

5. (intransitive, obsolete) To dissemble; to play fast and loose (with someone or something).Examples: "I would be loth to exchange consciences with them, and boggle so with God Almighty; but these men by a new kind of Metaphysick have found out a way to abstract the Person of the King from his Office to make his Soveraigntie a kinde of Platonick Idea hovering in the aire, while they visibly attempt to assail and destroy his person […]"intransitiveobsolete

6. (intransitive, of a rat) To wiggle the eyes as a result of bruxing.intransitive