The antonyms for the phrase "more estranged" could be "closer," "reconciled," "united," "intimate," or "familiar." These words imply that there is a significant change in the relationship, and that it has moved from a state of separation or isolation to one of unity and intimacy. A relationship that was once distant and cold can be transformed into a situation where both parties are closer and more connected than ever. When individuals who were once distant or estranged become closer, they are better able to communicate, share, and understand each other, leading to a stronger, healthier bond.