A backbiter is someone who speaks negatively about another person behind their back. This term can be broken down into six words: GOSSIP (6 letters), MOLAR (5 letters), GNAT (4 letters), TICK (4 letters), DETRACTOR (9 letters) and SLANDERER (9 letters). GOSSIP is the act of talking about someone else's private affairs, while molars are the large teeth at the back of the mouth. A GNAT is a small flying insect, and a TICK is a small arachnid. Detractors are people who criticize or belittle someone, and slanderers are people who spread false and malicious rumors.