This is the 799th most frequent Portuguese word.
isto
"This" - used to refer to something close to the speaker.
In this sentence, 'isto' is used as a demonstrative pronoun to point to or introduce a statement or object in close proximity.
Isto é um exemplo claro do uso correto da palavra.
This is a clear example of the correct use of the word.
Here, 'isto' functions as a demonstrative pronoun referring to an unidentified object in close proximity to the speaker.
O que é isto na sua mão?
What is this in your hand?
In this context, 'isto' serves to refer back to a previously mentioned idea or statement, emphasizing it as the subject of the action.