not worried or anxious about something

बेफिक्र

English Usage: She remained unconcerned about the upcoming exam.

Hindi Usage: वह आने वाली परीक्षा के बारे में बेफिक्र रही।

to make someone not concerned or anxious

बेफिक्र करना

English Usage: His calm demeanor was enough to unconcern the entire team.

Hindi Usage: उसकी शांत स्वभाव ने पूरी टीम को बेफिक्र कर दिया।