In us|politics|slang|lang=en terms the difference between mugwumpish and mugwumpism
is that mugwumpish is (us|politics|slang) resembling or characteristic of a mugwump while mugwumpism is (us|politics|slang) the acts and views of the mugwumps.
As an adjective mugwumpish
is (us|politics|slang) resembling or characteristic of a mugwump.
As a noun mugwumpism is
(us|politics|slang) the acts and views of the mugwumps.
mugwumpism
English
Noun
(US, politics, slang) The acts and views of the mugwumps.