Usage Note
Cuidadoso describes someone who acts with care and attention to detail. It is used with ser to describe a character trait (es muy cuidadoso) and with estar for a momentary state of care (estuvo cuidadoso con el jarrón). The feminine is cuidadosa; the adverb is cuidadosamente.
Examples
"Es una trabajadora muy cuidadosa."
Natural Translation
She is a very careful worker.

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