Beyond consideration is a phrase used to indicate that something is not worthy of being given a second thought. When we use this expression, we generally mean that the idea or proposal is not acceptable or realistic, and therefore we don't need to take it into account. To convey a similar meaning, there are several synonyms that can be used interchangeably, such as out of the question, unthinkable, impossible, not feasible, not worth discussing, and not on the table. All these phrases emphasize that the subject matter is something that cannot be taken seriously or considered as a viable option. By using these synonyms, we are implying that the proposal is impractical, irrelevant, or unrealistic.