Fight the urge to roll your eyes. Here's what to say to that know-it-all coworker who doesn't know when to stop talking about why they're always right.
Advice

Lines to use on know-it-all coworkers

As your coworker cuts you off and starts dominating the meeting (yet AGAIN), your face flushes. You fight the urge to roll your eyes more than ever.

Here’s what to say to that coworker who doesn’t know when to stop talking about why they’re always right.

Show them that you’ll be an ally when you work together — but draw boundaries 

Dr. Christine M. Allen, workplace psychologist and vice president of executive coaching firm Insight Business Works, tells Monster how to get this point across.

“State your intention: ‘I’d like to work on this project collaboratively, and I know we won’t always agree. I’d like the work to be a reflection of both of our ideas,’” Allen suggests.

She continues, “sometimes you will just have to be very direct. For instance, say, ‘John, you have very strong opinions and I admire that; however, I feel cut off and dismissed when you insist that you are right or are not willing to compromise or collaborate with me.’”

Get some background on why they believe what they do

Put them on the spot.

Michael Kerr, an international business speaker, president of Humor at Work, and author of “The Humor Advantage: Why Some Businesses are Laughing all the Way to the Bank,” told Forbes that you should do some digging.

“Ask why they believe something to be true or where they found their sources. Asking pointed questions on specific details can teach a know-it-all over time that they need to have their facts in order before speaking out,” he told the publication.

Tell them about the impact they’re having on others

It’s not all about the know-it-all — or you, for that matter.

Priscilla Claman, president of Career Strategies, Inc., suggests saying something like this to a coworker you have a good rapport with (and who you don’t manage) in the Harvard Business Review.

After asking to have a conversation with them, you can use these lines:

“We all know you are an expert in this area, but when you gave the answer right away, Nancy and Jorge immediately went quiet, so they didn’t get a chance to think things through or give their own answers. Did you notice that?” Claman writes.

But she cautions that if you say this to someone you don’t know well, you also run the risk of seeming like you know everything.

Thank them for their thoughts

Just don’t let them ruffle your feathers.  

Alison Green, author of the Ask a Manager blog, writes in U.S. News & World Report about what to do when a know-it-all coworker likes to share where they stand on everything and critiques your job performance.

“Let it roll of your back. The more you ignore this person and don’t let him get to you, the better. When he offers an unsolicited opinion, say, ‘Thanks, I’ll think about that.’ And if you find yourself getting frustrated, comfort yourself with the knowledge that this person is widely considered obnoxious. You’re definitely not the only one annoyed,” Green writes.