This is the 2374th most frequent Spanish word.
únicos
"Únicos" means "unique" or "one of a kind."
In this sentence, 'únicos' is used as an adjective meaning 'only,' expressing exclusivity.
Estos son los únicos libros que tengo.
These are the only books I have.
Here, 'únicos' describes 'they,' meaning 'unique,' indicating distinctiveness.
Ellos son únicos en su forma de pensar.
They are unique in their way of thinking.
In this sentence, 'única,' the singular form of 'únicos,' highlights the distinctiveness or rarity of the opportunity.