Is the word practised an adverb?

No, "practised" is not an adverb. It's the past participle of the verb "to practise" (or "practice" in American English).

Here's how it works:

* Verb: "He practised the piano every day."

* Past Participle: "She had practised for months before the competition."

The past participle can be used in different ways, including:

* Part of a verb phrase: "He had practised diligently."

* As an adjective: "She is a practised performer."

Let me know if you have any other questions!