Affectionate Caribbean slang for a quiet, reserved girl
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linguistic

Callaíta means quiet and is callada0 (quiet0) with the affectionate -ita1 suffix. In Caribbean Spanish, the d sound drops, so calladita becomes callaíta, an affectionate way to describe a girl as shy or soft-spoken.
callaíta
quiet, soft-spoken, reserved
An affectionate adjective describing a girl as shy or soft-spoken.
Ella es callaíta', pero pa'l sexo es atrevida, yo séShe's quiet, but she's daring when it comes to s*x, I know
Llega callaíta, pero trae la atenciónShe arrives quietly, but steals the spotlight