The term 'TSETSE' is an African pest fly, which is six letters long. It is a species of biting fly that can transmit diseases such as sleeping sickness and Nagana. TSETSE flies are found in tropical and subtropical regions of Africa, where they inhabit woodlands and savannas. They are large flies, typically about 8–17 millimeters long, and have a distinctive pattern of stripes on their backs. TSETSE flies feed on the blood of mammals, including humans, and can cause severe irritation and discomfort.