| retrograd | retrograde |
| Petrograd | Petrograd |
| prograd | prograde |
| Retroflex | retroflex |
| retroflex | retroflex |
| Retronym | retronym |
| retro- | retro- |
| Retorte | retort |
| Retoure | return |
| Tetragramm | Tetragrammaton |
| Grogram | grogram |
| Geograf | geographer |
| Autograf | autograph |
| Fotograf | photographer |
| Mythograf | mythographer |
| Wolgograd | Volgograd |
| Altgrad | degree |
| Neugrad | degree |
| Belgrad | Belgrade |
| Breitengrad | latitude |