cuidadoso
/kwidaˈdoso/ · B1 · adj
careful
🦺 cuidado (care) + -oso (full of) = care-full, careful
Spanish -oso works like English -ous: it means full of something. Cuidado means care, from Latin cogitatus, thought. So a cuidadoso person is full of care and thought. ¡Cuidado! is also the Spanish shout for Watch out!