Historically having come from the base of the Cobourg Peninsula, it is now spoken on Croker Island.
For example, body parts occur with possessive prefixes, and these alter the first consonant in the root: Both the words arm and to be sick originally started with an /m/, as shown in related languages such as Maung.
In Iwaidja, this form extended to the masculine and feminine, so that gender distinctions were lost, and the prefix disappeared, leaving only the consonant mutation—a situation perhaps unique in Australia, but not unlike that of the Celtic languages.
In English something similar is done in special cases: he fathered a child; she mothers him too much.
However, with blood relations, past can only mean that the person has died, and future only that they are yet to be born.