1. something that makes a person or situation more lively or energetic
Usage: informal
2. an alcoholic drink taken to revive or invigorate oneself
Usage: informal; British

Examples

• A cup of strong coffee was just the livener she needed to start her day.
• The party was getting dull until someone suggested a game as a livener.
• He ordered a whiskey as a livener before the important meeting.
• The coach’s pep talk served as a real livener for the tired team.
• After the long flight, they stopped at a pub for a quick livener.
• The energetic music acted as a livener for the sleepy audience.