adjective Increased or improved.
- Sales figures looked boosted after the new marketing campaign.
- Megan's performance as the first woman to play the character of nightclub boss Zidler has received strong reviews and boosted interest in the show.
— Georgia Levy-Collins, Megan Thee Stallion pulls out of Moulin Rouge show (2026)
adjective Having received an extra vaccine dose to strengthen immunity.
- I got Covid in December with the rest of the cast — I got Omicron after being vaxxed and boosted.
— Michael Paulson, Goodbye, Hades. Hello, Scotland. Amber Gray Parts With Persephone (2022)
- She felt reassured once she was fully boosted before the trip.
- Not out of fear of getting sick; I’m boosted, and I think if I got the virus I would probably be fine.
— Laura Collins-Hughes, I Love London Theater. But Not London Theatergoing (2022)