This is the 2752nd most frequent French word.
caché
Hidden.
The word 'caché' is used as an adjective describing the treasure's state of being hidden.
Le trésor était caché sous le vieux chêne.
The treasure was hidden under the old oak.
The word 'caché' is used as a past participle to indicate the action of hiding something.
Il a caché le livre derrière les autres.
He hid the book behind the others.
The word 'caché' functions as an adjective describing the talent as being hidden or not obvious.