English translation of 'उनका'
1. their determiner
You use their to indicate that something belongs or relates to the group of people, animals, or things you are talking about.
Janis and Kurt have announced their engagement.
The trees shed their leaves.
2. theirs pronoun
You use theirs to indicate that something belongs or relates to the group of people, animals, or things that you are talking about.
...at the table next to theirs.
Theirs had been a happy marriage.
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Translation of उनका from the Collins Hindi to English Dictionary