| A | B |
|---|
| retro | (latin) back; behind |
| pro | (latin) before; forward |
| retroactive | acting on or affecting that which is past |
| retroflex | adj, bent or curved backward |
| retroflex | v, articulate (a consonant) with the tongue curled back against the palate |
| retrogression | returning to a former state |
| retrospect | looking back on the past |
| progenitor | direct line; a person who first thinks of something and causes it to happen |
| progeny | immediate descendents; offspring |
| prognosis | prediction about how something will happen |
| prolix | tediously prolonged or tending to speak or write at great length |
| prologue | an event or act that leads to something more important; introduction to a play |
| propound | put forward, an idea |
