Ancillary/ˈænsəleri/ Definition 1 of 2Pro Tip 1/3Not Central Use 'ancillary' to describe something important but not the main focus. He provides ancillary support during project meetings. Pro Tip 2/3Positive Connotation 'Ancillary' often implies a helpful and supportive role. The teacher's ancillary role is vital for student success. Pro Tip 3/3Broad Usage Can refer to support in various fields, like healthcare, education, or business. Ancillary staff at hospitals are essential for patient care.