To disguise, to change something’s appearance so that it can’t be recognized. He wasn’t good at disguising himself so we knew who he was right away. She wore and disguise so it wasn’t sure who she was.
To clarify, to explain or make something clear. We weren’t sure what he meant until he clarified his ideas. Everyone was confused until she clarified what she meant.
To confuse, to make things difficult to understand. The opposite is to clarify. Everyone is confused, because the presentation is so disorganized. He confuses people because he keeps changing his ideas. The instructions were confusing so nobody knew what to do.
To ignore, to try not to notice or deal with something. To act as if something isn’t there. We tried to ignore her but she finally stood up and told everyone to shut up. People don’t respect or like her so they ignore her in the office.
To confirm, to indicate that something correct or completed it as susceptive. We won’t sure if he’s going to accept the offer until he called and confirmed it. we can’t start the project without written confirmation that we agree on the details.