foolish
meaningless
nonmeaningful
Pickwickian
absurd
asinine
askew
beyond belief
bizarre
cockamamie
crazy
dumb
extravagant
fantastic
fool
grotesque
high-flown
idiotic
imbecilic
incredible
irrational
laughable
loony
ludicrous
mad
monstrous
moronic
nutty
outrageous
outre
poppycockish
preposterous
ridiculous
rubbishy
screwball
screwy
senseless
silly
skimble-skamble
stupid
trashy
twaddling
twaddly
unmeaning
warped
weird
nonsense
contradictory
fanciful
farfetched
illogical
improbable
inane
incomprehensible
inconsequential
pointless
unfounded
unintelligible
untrue
commonsensical