Green’s Dictionary of Slang

afternoonified adj.

[the regular afternoon calls made on each other by society ladies]

smart, chic.

[UK]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.’.
[UK]J. Ware Passing Eng. of the Victorian Era.