Foster/ˈfɑːstər/ Definition 1 of 3Pro Tip 1/3Encouraging Growth Use 'foster' to show support for growing something intangible, like skills or relationships. The teacher worked to foster confidence in her students. Pro Tip 2/3Ideas Over Time 'Foster' implies a gradual process, not an instant change. The seminar aimed to foster an understanding of cultural diversity. Pro Tip 3/3Not Just Positive While often positive, 'foster' can also apply to negative feelings or ideas. The policy unintentionally fostered resentment among employees.