Most of us know the standard work communication “don’ts”: Don’t swear, don’t tell racist or sexist jokes, don’t lie, don’t send the whole office an email meant for your best friend. It’s the less-obvious mistakes that are the problem, because they could damage your reputation—without you having any idea.

Here are the communication mistakes to stop making, ASAP—because in this case, ignorance is not bliss.

  1. Don’t abuse the subject line. If you’re starting a new conversation, start a new email chain. (U.S. News)

  2. Don’t send an email when you need an urgent reply. It’s unreasonable to expect one—instead try calling, instant messaging, or talking in person. (Lifehack)

  3. Don’t make huge hand gestures. They actually make you seem less powerful. (Business Insider)

  4. Don’t use buzzwords. Speaking in clear, direct language does much for your credibility. (MediaBuzz)

  5. Don’t use a one-size-fits-all style. When talking to a group of people, you should use a variety of communication techniques to make sure you hit every type of listener. (Inc.)

  6. Don’t ask conversational dead ends. Questions that can be responded to in two words don’t lead to meaningful conversations. (CareerBright)

  7. Don’t apologize when it’s not your fault. It’s a conversational filler that has you accepting responsibility—and blame—you don’t deserve. (The Daily Muse)

  8. Don’t finish people’s sentences. Rather than making you appear in sync, it just makes you seem impatient for them to finish. (Business Insider)

Photo of oops on keyboard courtesy of Shutterstock.