Meaning of ackamarackus in English:

ackamarackus

Pronunciation /akəməˈrakəs/

noun

(also ackamaraka)
slang, rare US
  • Something regarded as pretentious nonsense; something intended to deceive; humbug.

Origin

1930s; earliest use found in Damon Runyon (1880–1946), journalist and short-story writer. Origin unknown. Perhaps an arbitrary formation, humorously formed to resemble Latin.