A love that is not reciprocated or returned.

एक ऐसा प्यार जो बदला नहीं जाता।

English Usage: His unrequited love for her made him very sad.

Hindi Usage: उसका उसके प्रति अनकही मोहब्बत उसे बहुत उदास करती थी।

Emotions or sentiments that are not acknowledged or returned.

ऐसी भावनाएँ जो स्वीकार या बदली नहीं जातीं।

English Usage: She struggled to cope with her unrequited feelings for him.

Hindi Usage: उसने उसके प्रति अपनी अनकही भावनाओं के साथ जूझने में कठिनाई महसूस की।