1. encounter someone/something unexpectedly, be viewed in a particular way by others
come across something unexpectedly/come across as being quite rude
The phrasal verb to come across has a number of meetings. If you come across someone or come across something it can mean to encounter someone or to discover something by chance. If you say that someone comes across as, for example, angry or helpful, it means that you form an opinion about them or view them in a particular way based on how they behave and present themselves. When you speak the way your idea is received by others can be how you come across. So for example, if you are presenting an idea, someone listening to you speak might say that you came across as very knowledgeable or that you came across as very enthusiastic.