Lacking proper seriousness; carefree

Glib or casual in attitude

बोली में चालाक या अनौपचारिक

English Usage: She had a flippant attitude towards the important issue, which was frustrating.

Hindi Usage: उसके लिए महत्वपूर्ण मुद्दे के प्रति अनौपचारिक रवैया रखना निराशाजनक था।