| SINGULAR | PLURAL | |
| NOM. | domus | domús |
| GEN. | domús (domí, loc.) | domuum (domórum) |
| DAT. | domuí (domó) | domibus |
| ACC. | domum | domós (domús) |
| ABL. | domó (domú) | domibus |
NOTE 1: The Locative is domí (rarely domuí), at home.
NOTE 2: The Genitive domí occurs in Plautus; domórum is late or poetic.