1. present participle of sup: eating supper or having an evening meal
Usage: somewhat formal or literary
2. present participle of sup: drinking or sipping liquid, especially in small amounts
Usage: literary or archaic

Examples

• The family was supping together when the phone rang.
• We found them supping on bread and cheese by the fireplace.
• The old man was supping his tea slowly from a china cup.
• They were supping wine and discussing the day’s events.
• After supping lightly, she retired to her room.
• The guests were supping in the grand dining hall.