Now your brain will never reject that the meaning of the prefix re- is âbackâ or âagain.â Reflect upon re-, and your vocabulary prowess will never regress! 1  reject: throw âbackâ. 2  recede: move âbackâ.  reduce: lead âbackâ.
1 Rattlesnakes rattle by shaking the rings at the end of their tails. 2  Water moccasins' mouths have a white, cottony lining.  Coral snakes have red, yellow and black rings along the length of their bodies.
Other Pit Vipers. Rattlesnakes arenât the only dangerous snakes to shake their tail; several other, closely related pit vipers exhibit the behavior. Cottonmouths (Agkistrodon piscivorous), copperheads (Agkistrodon contortrix), cantils (Agkistrodon bilineatus) and terciopelos (Bothrops asper) all shake their tails when frightened.