Politicaster is a term which refers to a person who ambitiously pursues a political career without being particularly skilled or knowledgeable in politics. Some synonyms for Politicaster include political lightweight, political neophyte, amateur politician, or political novice. Other terms that could be used include political opportunist, pretender, or political hack. All of these words suggest a lack of skill or experience in the political arena, and often imply a certain degree of insincerity or ambition without substance. It is important to use these terms with care if you are looking to criticize a political figure, as they can come across as unnecessarily harsh or derisive.