Definition of mugwumpism in English:

mugwumpism

noun

North American
  • The principles or practice of mugwumps; behaviour characteristic of a mugwump; (political) aloofness.

Origin

Late 19th century; earliest use found in The Congressional Record. From mugwump + -ism.

Pronunciation

mugwumpism

/ˈmʌɡwʌmpɪz(ə)m/