ackamarackus
/akəməˈrakəs/(also ackamaraka) slang (originally US ). Now rare
noun
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.