underparent noun 1verb 1forms 3 noun1 •One who has a subordinate position to the main parent but who takes on some parental responsibilities.If Father is the typical male underparent, as he generally is, it is not that he is a failure, except by overparent standards. — 1978 verb1 •To provide one's child with insufficient attention and nurturing.Do I underparent my child because I am not around enough to give the child what he or she needs? — 2007 formsunderparented · underparenting · underparents