Abolitionist

• person opposed to slavery and in favor of ending it
• Physical or mental exertion, especially when difficult or exhausting; work.
• A person who supported the movement to end the Transatlantic Slave Trade and slavery.
• someone who believes in the termination of slavery
• a person who worked to get slavery abolished (or eliminated)
• a reformer who favors abolishing slavery
• A person who favors the abolition of any institution, especially negro slavery