Adjective
(informal) cranky; grumpy; bad-tempered
(informal) pseudoscientific
a crankish society of supposed UFO abductees
Although the Rich angle is pushed only by crankish rightwingers, the "leaked from the inside" theory has been aggressively pushed by certain anti-Clinton pseudoliberals -- mainly VIPS. Source: Internet
I know next to nothing about him, but the views ascribed to him in this Wikipedia article are crankish, rejected not by most, but by all specialists in Aramaic, and would not be taken seriously in professional journals and monographs. Source: Internet