primary or chief

most important

सबसे महत्वपूर्ण

English Usage: His main concern is the safety of his family.

Hindi Usage: उसकी सबसे महत्वपूर्ण चिंता अपने परिवार की सुरक्षा है।

to give back

लौटाना

English Usage: Please return the book by tomorrow.

Hindi Usage: कृपया कल तक किताब लौटा दें।

to go back