quartet, quartette or quartett /kwör-tetˈ/

1. A set of four
2. A composition for four voices or instruments
3. A set of performers or instruments for such compositions

• advisers
• advisership
• adviserships
• advises
• advising
• advisings
• advisor
• advisorate
• advisorates
• advisories
• advisors
• advisory
• Advisory, Conciliation and Arbitration Service
• ad vivum
• advocaat
• advocaats
• advocacies
• advocacy
• advocate
• advocated
• advocate-depute
• advocates
• advocating
• advocation
• advocations