"Keeps in countenance" means to support or reinforce the beliefs or actions of someone else. Synonyms for this term include "encourages," "endorses," "upholds," "defends," and "validates." Using these synonyms instead of repeating the same phrase can add variation and interest to your writing. Additionally, it can help avoid using the same word repeatedly and therefore prevent redundancy. Employing synonyms like these can expand your vocabulary and make your writing more impactful.