The word "neanderthalian" refers to a person who is perceived to be primitive, uncivilized, or backward in their thinking or behavior. There are many synonyms that can be used to describe such a person, including uncultured, uneducated, unrefined, unsophisticated, boorish, and uncivilized. Other words that can be used to convey the same meaning as neanderthalian include barbaric, uncivilized, savage, and primitive. These words are often used to describe individuals who resist change, reject new ideas, and cling to outdated beliefs and customs. In today's fast-paced world, it is important to maintain an open mind and cultivate a willingness to learn and adapt to new situations to avoid being labeled as neanderthalian.