| Rationale | rationale |
| rational | rational |
| arational | arational |
| rationale Zahl | rational number rational numbers |
| rationell | economic |
| national | national |
| Ration | ration |
| irrational | irrational |
| relational | relational |
| optional | optional |
| regional | regional |
| atonal | atonal |
| Antifonale | antiphonal |
| Radikale | radical |
| Oration | collect |
| Rattenfalle | mousetrap |
| irrationell | irrational |
| rate mal | guess what |
| Nationalrat | National Council |
| Rating | rating |