Chu

It's a very common word in Argentinian Spanish. It means “Cute or adorable”, said in a cute way too! It's usually more used with the expression “So cute!” (“¡Más Chu!” in Argentinian slang.)

–My boyfriend made a whole song for me.
–So chu!

–“Mi novio me hizo toda una canción para mí.”

–“¡Más Chu!”