Definition from Wiktionary, the free dictionary
afterfest (not comparable)
- Occurring subsequent to a festival
2004 September 3, David Whiteis, “Dee Alexander”, in Chicago Reader:
- Jazz Festival week is a busy one for Alexander: her gigs include a Friday afterfest set at Rosa's with her own band, a Sunday afterfest set at HotHouse with Thompson's Africa Brass, and a Tuesday duet at the Cultural Center with pianist Jeremy Khan.