to one person is salve, to more than one person is salvete. (pronounced salway) goodbye to one person is vale, and goodbye to multiple people is valete. (v is pronounced as a w)

Answer:

The phrase " and goodbye" was used in poem 101 by Gaius Valerius Catullus [c. 84-c. 54 B.C.]. He wrote about visiting his brother's tomb. The poem ends with "atque in perpetuum, frater, ave atque vale" is often translated as "But now for all time, my brother, hail and farewell."