cause to have difficulty in understanding and confuse so much that effective action is impossible
"This beats me!"
"Got me--I don't know the answer!"
"a vexing problem"
"This question really stuck me"
"What ultimately frustrated every challenger was Ruth's amazing September surge"
"foil your opponent"
He by the heels him hung upon a tree And bafful'd so, that all which passed by The picture of his punishment might see.