unpaternal
/ʌnˈpætərnəl/Definitions
1. adjective
Lacking or failing to show the qualities or characteristics traditionally associated with a father.
“The social worker noted that the unpaternal attitude of the child’s mother towards her daughter was affecting her development.”
2. noun
A lack or absence of paternal qualities or characteristics.
“The researcher studied the effects of unpaternalism on family dynamics in non-traditional households.”