1. Members of Christian churches that separated from the Roman Catholic Church, especially during the Reformation in the 16th century.
Usage: Usually capitalized when referring to the religious group; Plural form of Protestant
2. People who make a formal objection or complaint against something.
Usage: Lowercase; less common usage; Plural form of protester in some contexts

Examples

• Many Protestants in Northern Europe embraced the teachings of Martin Luther.
• The Protestants and Catholics had different views on church authority.
• Protestants make up a significant portion of the Christian population worldwide.
• The protestants gathered outside the government building to voice their concerns.
• Several protestants filed formal complaints about the new policy.