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

• oneyre
• oneyres
• onfall
• onfalls
• on file
• on fire
• on firm ground
• onflow
• onflows
• on foot
• on-going
• ongoing
• ongoings
• on guard
• on hand
• on heat
• on her beam-ends
• on high
• on hire
• on hold
• on ice
• onion
• onion dome
• onion domes
• onioned