"Hadst rip" is a slang term used to describe someone who is being unreasonable or mischievous. There are many synonyms that can be used to describe this behaviour, such as "acting out", "being difficult", "misbehaving", "defying authority", and "causing trouble". Other similar terms include "rebelling", "going against the grain", "defying the rules", and "being rebellious". These words are often used to describe children and teenagers who are testing boundaries and pushing limits, but they can also be used to describe adults who are acting out in a similarly disruptive manner. Regardless of the context, these words all convey a sense of defiance and disobedience that can be challenging to deal with.