1. In a manner relating to the Roman Catholic Church or its beliefs and practices.
Usage: Often capitalized when referring specifically to Roman Catholicism
2. In a universal or comprehensive manner; broadly or inclusively.
Usage: Rare; derived from the original sense of 'catholic' meaning universal

Examples

• She was raised catholically and attended Catholic schools throughout her childhood.
• The parish operates catholically, welcoming members from all backgrounds.
• He approached the subject catholically, considering perspectives from many different traditions.
• The organization's mission is to serve the community catholically, without sectarian bias.
• They interpreted the doctrine catholically, emphasizing its universal principles.