This is the 1542nd most frequent Spanish word.
uu
"Uu" is not a word in Spanish.
Onomatopoeia representing a sound.
El sonido que hace esta alarma es uu.
The sound this alarm makes is uu.
Descriptive imitation of a shape or sound.
Observa cómo la forma de la onda se parece a una línea que dice uu.
Notice how the shape of the wave resembles a line that says uu.
Representation of a phonetic variation.