nuncaadverb
Nunca means never in English. It is an adverb.
- never
Nunca he viajado en avión.
I have never traveled by plane.
Ella nunca come carne los viernes.
She never eats meat on Fridays.
No he visto nunca una casa tan grande.
I have never seen such a big house.
Mi hermano nunca llega tarde al trabajo.
My brother never arrives late to work.