Ff: Flummoxed

Sited: Tom Peters used the word in the book, RE-Imagine! Business Excellence in a Disruptive Age:
IBM nailed Control Data's scalp to the wall, but was flummoxed by the new kid on the block, geeky Bill Gates.
Flummoxed:

tr.v. flum·moxed, flum·mox·ing, flum·mox·es Informal

To confuse; perplex.

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[Probably of English dialectal origin.]