"Keeping in countenance" means to support or approve of something or someone. Synonyms for this phrase include endorsing, championing, defending, advocating, upholding, and promoting. These words suggest that you are standing up for or vouching for someone or something, whether it be a particular idea, belief, or person. Other synonyms include endorsing, affirming, ratifying, and supporting, all of which connote a sense of validation or approval. Using any of these synonyms can convey a strong message that you are standing behind the person or concept in question and that you believe in its worth or merit.