STUPISH

an idea that is not only stupid but sounds foolish and makes no sense at all.

when people suggest ideas that is incoherent and doesnt make any sense. Eg..
person 1:.that politicians suggested that we repeal the 14th amendment"
person 2:..thats just a stupish idea

ALSO
girl 1: jane believes his boyfriend is an angel
girl 2: She is so stupish to beleive that