| Fideist | fideist |
| Deist | deist |
| feist | fat adipose |
| Idist | Idist |
| Fideismus | fideism |
| Fidel | fiddle vielle |
| fidel | jolly merry |
| Fidelität | faithfulness fidelity loyalty accuracy exactness |
| Idealist | visionary idealist |
| Siderit | siderite |
| Bidet | bidet |
| Widerrist | skein |
| Jadeit | jadeite |
| Pandeist | pandeist |
| Freigeist | free spirit |
| Akmeist | Acmeist |
| Atheist | atheist |
| Eiweiß | albumen eggwhite protein |
| Fleiß | industriousness |
| Geist | mind spirit ghost |