jamásadverb
Jamás means never in English. It is an adverb.
- never
No he visto jamás una cosa así.
I have never seen anything like it.
Ella dijo que jamás volvería a esa casa.
She said she would never go back to that house.
Ese hombre jamás dice la verdad a nadie.
That man never tells anyone the truth.
No lo haría jamás, ni por todo el dinero del mundo.
I would never do it, not for all the money in the world.