1. in a very close and personal way; with detailed knowledge
2. in a way that involves very close friendship or personal relationship

Examples

• She knew the neighborhood intimately after living there for twenty years.
• The two friends had worked together so long they understood each other intimately.
• He was intimately familiar with every detail of the project.
• The author intimately portrays the struggles of small-town life.
• They had been intimately connected since childhood.
• She intimately understood the challenges facing working mothers.