| Singular | Plural | |
|---|---|---|
| Nominativ | catechumena | catechumenae |
| Genitiv | catechumenae, catechumenai | catechumenum, catechumenarum |
| Dativ | catechumenae, catechumenai | catechumenis, catechumenabus |
| Akkusativ | catechumenam | catechumenas |
| Ablativ | catechumena, catechumenad | catechumenis, catechumenabus |
| Vokativ | catechumena | catechumenae |