The word "mental" is often used to refer to anything related to the mind or emotions. However, there are many synonyms that can be used to convey the same meaning. For instance, "psychological" and "cognitive" are good alternatives to the word "mental". Other options include "emotional", "intellectual", "psychic", "neurological", and "behavioral". Using these synonyms can help add variety to your writing and avoid repetition. Whether you are writing a scientific research paper or a personal blog post, having a diverse range of vocabulary at your disposal will always help you to clearly and effectively communicate your ideas.