"to prance about in a self-satisfied manner," 1871, coined by Lewis Carroll in "Jabberwocky," apparently by blending gallop and triumph. "The sense in current use may vary according to different notions of what the sound expresses" [OED]. Related: Galumphing.
the giant tortoises galumphed around in their pen
Gallup poll
galoot
galore
galosh
galoshes
galumph
galvanic
galvanise
galvanism
galvanization
galvanize
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