any
The Italian word 'qualsiasi' is used in the same way as 'any' in English. It can be used to express a lack of restriction or limitation. For example, 'Puoi scegliere qualsiasi libro' means 'You can choose any book.' It can also be used to express that something is true for all cases, as in 'Qualsiasi persona sarebbe felice di vincere il premio,' which means 'Any person would be happy to win the prize.'
I can choose any book from the library.
This phrase implies that the speaker has the freedom to select a book of their choice without restriction.
You can use any color to paint.
Here, the speaker is indicating that the choice of color is entirely up to the listener, which encourages creativity.