The word "clubhouse lawyers" is typically used to refer to people who like to pretend they know more about legal matters than they actually do. If we're looking for antonyms for this phrase, we might consider terms like "humble," "unpretentious," or "unassuming." These words suggest a person who is not interested in flaunting their knowledge or pretending to be an expert on any given subject. Other possible antonyms for clubhouse lawyers might include "honest," "authentic," or "genuine," which describe people who are sincere in their interactions with others and don't try to put on airs or pretend to be someone they're not.