This is the 804th most frequent Italian word.
riguardo
"Riguardo" means "regard," "respect," or "consideration" in English.
The word 'riguardo' here introduces the topic of discussion, equivalent to 'regarding' or 'concerning'.
Riguardo al progetto, dobbiamo discutere alcuni dettagli.
Regarding the project, we need to discuss some details.
In this example, 'riguardo' specifies the subject of what the individual has no comment on.
Non ho niente da dire riguardo ciò che è successo.
I have nothing to say regarding what happened.
Here, 'riguardo' once again sets up the topic about which the speaker wants to express their thought, showing its use in introducing a topic.