unbelievably fantastic, so much so that no other word will do. derived from a misspelling of "spectacular" seen on a high school student's essay.
last night's party was absolutely spantacular.
by blipper52 September 01, 2007
The Pacific when viewed from Central America's continental divide is spantacular, especially under heavy influence of psilocybin.
by snaab May 13, 2005