This is the 54th most frequent Hindi word.
य
The Hindi word "य" is a pronoun meaning "who" or "which" in English, often used in relative clauses.
In this sentence, 'य' is used as a demonstrative pronoun to refer specifically to 'this' man.
य आदमी हमेशा मदद करता है।
This man always helps.
Here, 'य' is used adjectivally to specify 'this' about a particular time.
पढ़ाई य समय का सबसे अच्छा उपयोग है।
Studying is the best use of this time.
In this context, 'य' is functioning as a pronoun to emphasize 'this' as the subject of pride.