This is the 7808th most frequent Spanish word.
malu
The word "malu" does not exist in standard Spanish. It may be a name or a colloquial/regional term.
Used as a proper noun referring to a Spanish singer.
Me encanta escuchar las canciones de Malú.
I love listening to Malú's songs.
Used as a colloquial adjective meaning mischievous.
Ese niño es muy malu, siempre está haciendo travesuras.
That child is very mischievous, always getting into trouble.
Used as a name chosen for a pet, showing its adaptability as a proper noun.