English
Fontcest
From font + -cest, since both characters are named after fonts.
Formed from font + -cest
Proto-Indo-European *dʰenh₂- ‘to flow’
Proto-Italic *fontis ‘spring, well’
Latin fons ‘fountain’
Old English font
English font
The story
From font + -cest, since both characters are named after fonts.
Today it means
name The incestuous ship of brothers Sans and Papyrus from the video game Undertale.
Language periods are conventional ranges, not dates for this word.
Etymograph / Fontcest