providing necessary support to the primary activities or services

something that is not essential but adds to the main features or functions

गौरवशाली

English Usage: The ancillary subject of art history enriched the overall curriculum for students majoring in design.

Hindi Usage: कला इतिहास का गौरवशाली विषय डिजाइन में विशेषज्ञता वाले छात्रों के लिए समग्र पाठ्यक्रम को समृद्ध करता है।