At the post-natal time points, mothers were asked to identify what they felt was the worst form of negative support that a father could provide to discourage breastfeeding. The most commonly cited example of the worst form of negative support identified by mothers was a father making negative comments or remarks about breastfeeding. More than any other form of negative support, mothers felt that a father being verbally negative about breastfeeding, such as telling her to just give up, would make it hardest for a mother to continue breastfeeding.