Independent IT contractors spend a lot of time in interviews -- with clients, with recruiters, with end-users -- and each of these interviews are often when you'll set a first impression. Due to the high-pressure nature of them, especially job interviews, we tend to use vocabulary that comes easily and naturally to us. This is when words sneak into our sentences that affect how a listener perceives us.
It takes intensive practice and comfort to avoid all stutters and small miscommunications, but this video from BI Success suggests 6 words to start eliminating in your vocabulary which will make you sound smarter. This is not only great advice for job interviews, but also for your everyday professional life.