silly, foolish
Borra esa sonrisa boba de tu cara.
Wipe that silly smile off your face.
Boba.
— La linterna roja (1991)
Mejor, o dormirás hasta quedarte boba.
Better, or you'll sleep until you're blue in the face.
No seas boba.
Don’t be silly.
— El espíritu de la colmena (1973)