Green’s Dictionary of Slang

afternoonified adj.

smart, chic.

1897		Daily Tel. July n.p.: In reply to his [i.e. a draper’s] question whether the goods were not suitable, the fastidious customer answered: ‘No, thank you; they are not “afternoonified” enough for me.’.
1909		J. Ware Passing Eng. of the Victorian Era.