upfuladj.
/ˈʌpf(ᵿ)l/, U.S. /ˈəpf(ə)l/, Caribbean English /ˈʌpfʊl/ Chiefly Jamaican.
Inspiring happiness, optimism, or hope; (esp. of music) cheerful, uplifting.
ΘΚΠ
the mind > emotion > pleasure > cheerfulness > [adjective] > cheering or suggestive of cheerfulness > of sounds
sprightly?1611
upful1976
1976 Sunday Gleaner (Kingston, Jamaica) 14 Mar. (Mag.) 11/5 Micron is where I will stay because they are one of the few upful businessmen as far as record distributions are concerned.
1999 S. Reynolds Generation Ecstasy xv. 290 Slipmatt continued to make celebratory, upful tunes based on hectic breakbeats.
2020 @FrankieTheBran 18 May in twitter.com (accessed 27 May 2020) Spread upful vibes.
This is a new entry (OED Third Edition, September 2021; most recently modified version published online December 2021).
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adj.1976