Definition from macmillandictionary.com
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No act of kindness is ever wasted.
We strongly condemn any act of violence against innocent people.
groups committing criminal acts
She isn’t really upset: it’s all an act.
She’s just putting on an act because the boys are here.
He eats fire as part of his act.
They remain one of rock music’s most exciting live acts.
The scene occurs at the beginning of the first act.
Act 1 Scene 2
the Data Protection Act
an act of Parliament