upbeat
adj. B2 Upper Intermediate US //ˈəpˌbit// UK //ʌpbˈiːt// up·beat
adj. cheerful, positive, and full of energy. You use this word to describe a mood, a person, or music that makes you feel happy.
adj. characterized by a cheerful, optimistic, or lively disposition; often used to describe music with a fast, energetic tempo.
She has a very upbeat personality.
The team kept an upbeat attitude despite the difficult challenges they faced during the project.
The film's upbeat soundtrack contrasts sharply with the protagonist's internal despair, creating a poignant sense of dramatic irony.
From up- + beat.