This is the 9514th most frequent Catalan word.
insubstituïble
Irreplaceable.
In this sentence, 'insubstituïble' describes the unique and unmatched quality of true friendship, emphasizing that it cannot be replaced or equaled by something else.
L'amistat veritable és insubstituïble.
True friendship is irreplaceable.
Here, 'insubstituïble' conveys the unique value of the book due to its historical significance, meaning it has no equal or replacement.
Aquest llibre antic és insubstituïble per la seva història.
This old book is irreplaceable because of its history.
In this context, 'insubstituïble' refers to the unique and invaluable role or contribution of every individual, highlighting the idea that everyone has a distinct and crucial part to play.