Voluntary acts: conduct done by free will without coercion, shaping legal characterisation across statutory contexts. The concept of voluntary denotes conduct performed by the free exercise of the will, intentionally and without coercion, distinguishing acts done by choice from those compelled by external influence or legal duty; key features include intentionality, absence of external constraint, and potential gratuitousness, and courts treat acts done knowingly and without coercion, fraud, misrepresentation, or legal compulsion as voluntary while excluding compulsory or collective forms of naturalisation.