This is the 421st most frequent Urdu word.
یو
The Urdu word "یو" (Yu) means "like this" or "in this manner" in English.
In this sentence, 'یو' (yo) is used as a demonstrative to refer to 'this' present object, i.e., the cup.
یو کپ خوبصورت ہے۔
This cup is beautiful.
The word 'یو' (yo) here denotes 'this' specific book among possibly others.
یو کتاب میری پسندیدہ ہے۔
This book is my favorite.
Here, 'یو' (yo) is used to point out or refer to 'this' boy.