You can browse the Hindi Wordnet through this interface. It will require Internet to work.
For Querying in Hindi, you can either:
1. Type your query with your mobile keyboard e.g. Type 'aam' , press 'Enter' to Transliterate to 'आम' in Hindi, and then click on 'Search'.
Hindi WordNet is more than a conventional Hindi dictionary. It gives different relations between synsets or synonym sets which represent unique concepts.
