Treating indulgently means to coddle, which is an 8-letter word. Coddling is a form of behavior that involves treating someone with excessive care and attention, often in a way that is overprotective or indulgent. It can involve providing too much support or protection, or giving too much leniency or lenience. Coddling can be seen as a way of showing love and affection, but it can also be seen as a way of enabling bad behavior or preventing someone from growing and developing.