| Case | Singular | Plural |
|---|---|---|
| nom | vegetarianismus | vegetarianismy |
| gen | vegetarianismu | vegetarianismů |
| dat | vegetarianismu | vegetarianismům |
| acc | vegetarianismus | vegetarianismy |
| voc | vegetarianisme | vegetarianismy |
| loc | vegetarianismu | vegetarianismech |
| instr | vegetarianismem | vegetarianismy |