Crossword Genius

Acted wildly, being detained by the sound of it (6)

Ross

I believe the answer is:

helled

I'm a little stuck... Click here to teach me more about this clue!

'acted' is the definition.
Both the definition and answer are past participle verbs.
Maybe you can see a link between them that I don't see?

I don't understand the rest of the clue.

Can you help me to learn more?

I've seen this clue in The Times.
Want a hint initially instead of a full solution? Install my app