In a sentence
Six example sentences with voluntary, each labelled with its topic.
The trial enrolled patients on a voluntary basis, and anyone could withdraw at any visit without giving a reason.
Medicine
Because the confession was voluntary and made without any promise of leniency, the appeals court let the verdict stand.
Law
Turnout at the town meeting is voluntary, so the clerk expected a small crowd on a rainy Tuesday evening.
Politics
The export limits were voluntary in name only, since the exporting country knew tariffs would follow if it refused.
Economics
Overtime at the plant is voluntary, and the manager keeps a list of who prefers the extra Saturday shifts.
Business
Participation in the study was voluntary, and the researchers reminded students that a refusal would never affect their grade.
Psychology
Study voluntary until you keep it
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Found in these word lists
Found in 5 published word listsAuthoritative
Each source is a published word list that contains voluntary. No exam board publishes an official GRE, GMAT or SAT list; GMAT words come from GRE lists and the Academic Word List.