Pretended usually means acting like something is true when it's not. A person pretends to have skills or feelings they don't really have.
For example, someone might pretend to be interested in a hobby to fit in with their friends, but if you ask them more questions, they'll reveal that they've never actually tried it before. Pretending can also mean imitating something real, like pretending to be a doctor on stage or in a play.
In some cases, pretended is used as the past tense of pretend, so "I pretended I didn't see it" means you acted like you hadn't noticed something, but you actually did.
To claim, to allege, especially when falsely or as a form of deliberate deception.
