This is the 542nd most frequent Italian word.
risposto
"Risposto" means "answered" or "replied" in English.
Here, 'risposto' is used as the past participle of 'rispondere' to form the past tense.
Ho risposto alla domanda del professore.
I answered the professor's question.
In this case, 'risposto' describes the manner of a response.
Mi ha risposto con un sorriso.
He/She responded to me with a smile.
'Risposto' here again functions as the past participle of 'rispondere', showing it used in a negation structure.