Where does “hoppy glop” come from?

hoppy glop (English) comes from English hoppy, from English hop, from Dutch hop, from Middle Dutch hoppe, from Old French huppe, from Latin upupa, from Old Saxon uppa, from Old Norse á — on, onto.

Ancestry of “hoppy glop”, step by step

hoppy glop traces back through two separate lines of ancestry.

via English hoppy

StepLanguageWordMeaning
1EnglishhoppyHaving a taste of hops; heavily flavoured with...
2EnglishhopA short jump; A jump on one leg; A short journey,...
3Dutchhophoopoe, the species "Upupa epops" or an...
4Middle Dutchhoppehops; hopped beer
5Old Frenchhuppe
6Latinupupahoopoe
7Old Saxonuppaabove
8Old Norseáriver; Alternative form of ær; on
9Proto-Norseᚨᚾon
10Proto-Germanicanaon, at; on, onto; ana
11Proto-Indo-Europeanh₂en-on, onto

via English glop

StepLanguageWordMeaning
1EnglishglopTo stare in amazement; Any gooey substance; A...
2EnglishglopeTo gaze in alarm; be terrified; stare;...
3Middle Englishglopen
4Old Norseglápato stare vacantly; to stare
5Proto-Germanicglupanąto shine, gape
6Proto-Indo-Europeangʰlub(ʰ)-to yawn, gape
Every word from Proto-Indo-European h₂en-Every word from Proto-Germanic anaEvery word from Proto-Norse ᚨᚾ