Definition of ackamarackus in English:

ackamarackus

(also ackamaraka)

noun

US
slang, rare
  • 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.

Pronunciation:

ackamarackus

/akəməˈrakəs/