sinceroadjective

Sincero means sincere in English. It is an adjective, and it changes to sincera, sinceros and sinceras.

Mis más sinceras disculpas.

My sincerest apologies.

Tomás es una persona sincera.

Tomás is a sincere person.

Todos los niños son sinceros.

All the children are honest.

Nunca tuve amistades sinceras.

I never had sincere friendships.

Common forms