The word "spieler" is often used to describe someone who is a gambler, swindler or con artist. However, there are many other synonyms that can be used to describe a person with such traits. Some of the most common ones include hustler, charlatan, cheat, trickster, fraudster, crook, scammer, and deceiver. These words all carry a negative connotation and describe someone who is dishonest and manipulative. Other similar words that can be used to describe someone who cheats or takes advantage of others include rogue, scoundrel, rascal, knave, and villain. Regardless of which word is used, they all imply that the person in question is someone who should not be trusted.