How to Handle a Know-It-All

Know-it-alls walk the halls at every level—from the basement to the executive floor. It’s not their title or expertise that’s the problem. Most everyone welcomes helpful information or experience when solving a problem or seeking innovative ideas. The know-it-all label comes from a person’s communication style and attitude—that is, the manner in which their expertise winds its way into the discussion.

Know-it-all nastiness feels like a brick wall when you bump into it. “That’s impossible.”...