Arthur Garfield Hays was a renowned attorney and civil liberties advocate during the early 20th century. Some synonyms for him might include: lawyer, legal champion, defender of free speech, civil rights activist, or advocate for justice. He fought tirelessly to protect the rights of individuals and to ensure that the law was applied fairly and justly. Hays was also a prolific writer and lecturer, and his works are still studied and revered today. He was a force to be reckoned with in his time, and his legacy lives on as a reminder of the importance of defending civil liberties and championing justice for all.