adjective meaning something that is absoloutely absurd and/or doesn't make sense.
The website preposterous.ca doesn't make any sense!
by lurker August 14, 2004
1 more definition
Absolutely unacceptable to the s.o.b. who likes saying these big ass words
Brittany always beats my ass severely in bomberman. That shits just preposterous..propos..preopst...possum! ..bitch
by MaMa B January 11, 2015