5. Um

"Saying 'um' too much could make someone picture you twirling your hair, chomping bubblegum and asking, 'Wait, what is this interview for again?' Connors says. "You want every question to be an opportunity to highlight why you're confident that you are the best candidate for the job, even if on paper you might look too inexperienced."

When you can, practice interviews with your friends, mentors and family, and if you need a moment to think during your interview, just say so, she suggests.

6. Whatever

"'Whatever' is our verbal version of throwing up our hands at a situation," Trovato says. "If you end a sentence during an interview with something like, 'I did what I could, but whatever,' it shows you chose to disconnect from a situation rather than see it through."

Overall, 'whatever' comes across as dismissive or even angry, and all the interviewer will hear is that you never tried, she says.

7. Stuff

When someone asks you what your job duties were at your last position, saying 'Oh, a lot of stuff," is the quickest way to get your resume thrown in the trash, Trovato says.

"We are often overly secure in being able to explain the work we do because we do it every day," Trovato says. "But before you go into an interview, you need to practice telling someone about your key responsibilities."

8. Hate

Never turn the conversation in the wrong direction with negative words like "hate," says Nathan Parcells, co-founder and CMO of online job platform InternMatch.

Even if you're tempted to highlight difficulties in your last position -- don't.

"Don't talk badly about former employers," Parcells says. "If you had a negative experience, focus on what you learned and how you overcame obstacles."

9. Age

Although mentioning your age won't always serve as a black mark against you, it can put the interviewer in an awkward position, since they aren't allowed to ask you about age, marital status or any of the other protected categories, Connors says.

"It doesn't hurt anything to offer it up, but it does put the interviewer in a precarious position where they can't really comment on what you've said and need to redirect back to questions regarding this specific role and requirements," she says.

If you liked this article you might like

To Downsize or Not to Downsize: The Retiree's Question

10 Reasons Hiring an Older Worker May be the Best Decision You Ever Make

5 Things Boomer Employees With Millennial Managers Should Never Do

5 Questions to Ask Before You Take the Plunge and Quit Your Day Job

3 Reasons Baby Boomers and Millennials Are More Alike Than Anyone Wants to Admit