According to Merriam-Webster, it means you are “able to be trusted to do or provide what is needed; able to be relied on.” Sounds like a pretty big deal and a personality trait that we should all work hard to achieve. After all, your boss needs to know that you prioritize your work, you will meet deadlines, will arrive on time and be there for whatever the team and company might need. In fact, a recent study showed that the number one career limiting habit that people unintentionally practice, and that prevents them from achieving maximum success at work, is unreliability.