How to Say "carefully" in Spanish
The most common Spanish word for “carefully” is “cuidadosamente” — use 'cuidadosamente' when the action requires attention to detail, precision, or a gentle touch to prevent something from being harmed or broken..
cuidadosamente
kwee-dah-doh-sah-MEN-tay/kwi.ðaˌðo.saˈmen.te/

Examples
Ella colocó el jarrón de cristal cuidadosamente sobre la mesa.
She carefully placed the crystal vase on the table.
Debemos revisar cuidadosamente el contrato antes de firmar cualquier cosa.
We must carefully review the contract before signing anything.
El cirujano procedió cuidadosamente para evitar dañar los nervios vitales.
The surgeon proceeded cautiously to avoid damaging vital nerves.
How Adverbs End
In Spanish, many words that tell you 'how' an action is done end in '-mente', which is like adding '-ly' in English. This word describes the verb (the action).
The Root Adjective
The word comes from the feminine version of the adjective 'cuidadoso' (careful), which is 'cuidadosa'. You always add '-mente' to the feminine form of the adjective.
Mixing Adjective and Adverb
Mistake: “Hizo la tarea cuidadoso.”
Correction: Hizo la tarea cuidadosamente. (The '-mente' ending is needed because you are describing how the action ('hizo') was performed, not describing the noun.)
atentamente
/ah-ten-tah-MEN-teh//atenˈtamente/

Examples
Los estudiantes escucharon atentamente al profesor.
The students listened attentively to the teacher.
Por favor, lea atentamente las instrucciones.
Please read the instructions carefully.
How it's built
This word is made by taking the adjective 'atenta' (attentive) and adding '-mente' (the Spanish equivalent of '-ly').
Confusing focused attention with cautious action
Related Translations
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