Where does “cheese up” come from?

cheese up (English) comes from English up, from Middle English up, from Old English upp, from Proto-West Germanic *upp.

cheese up (English): To add cheese to; make cheesy or cheesier

Definitions

  1. To add cheese to; make cheesy or cheesier

Ancestry of “cheese up”, step by step

cheese up traces back through two separate lines of ancestry.

via English up

StepLanguageWordMeaning
1EnglishupAway from the surface of the Earth or other...
2Middle Englishupto a vertical axis
3Old Englishuppup; upstairs
4Proto-West Germanic*upp

via English cheese

StepLanguageWordMeaning
1EnglishcheeseA dairy product made from curdled or cultured...
2EnglishcheesyOverdramatic, excessively emotional or clichéd,...
3Middle Englishchesy
Every word from Proto-West Germanic *upp
cheese up — Etymology, Origin & Word History | Etymology Explorer