As adverbs the difference between rummily and yummily
is that rummily is in a rum fashion; oddly, strangely while yummily is in a yummy way.
rummily
English
Adverb
(
en adverb)
In a rum fashion; oddly, strangely.
* 1919 , P G Wodehouse, My Man Jeeves
- Rather rummily , that's exactly what I was thinking just now myself.