The phrase "as questionable a" is correct and usable in written English.
It is typically used to express that something is being questioned or doubted in a comparative manner.
Example: "His motives were as questionable a choice as the method he used to achieve his goals."
Alternatives: "as dubious a" or "as suspect a".
Jeffries had been listed as questionable a day earlier because of a bruised knee.
(Some statistical models assume that it does, which I regard as just as questionable a claim as Ms. McArdle's).
Although Richardson said he hoped to play, the Knicks are listing him as questionable — a description that seems apt on many levels.
In rejecting the film for public money, she described its financing arrangements as "questionable" — a claim disputed by Mr. van den Houten, who said his Modernciné company has been careful to pay its bills and has other backing for a budget of less than $1 million.
A quick, glib description of this self-consciously literary novel might go something like this: a contemporary New York variation on "The Brothers Karamazov," featuring a J. D. Salinger-like writer in the role of Father, and a protagonist who turns out to be as questionable a tour guide as the notoriously unreliable narrator of Ford Madox Ford's classic "The Good Soldier".
None of these directors made as questionable a decision as Vincent Gallo, whose controversial The Brown Bunny climaxes with a scene in which his character receives a blowjob from Chloë Sevigny (who happens to be Gallo's real-life ex-girlfriend).
This may be as questionable an interpretation as Freud's account of male homosexuality.
We need to seriously ask why the morality of advocating for increased fish consumption in developed countries is not as questionable as driving a Hummer or wearing a tiger skin coat.
Incidents of violent crime which Mr Bett regarded as questionable included a woman throwing a biscuit at a man and leaving him with a small red mark being recorded as ABH.
Bush had been listed as questionable after a magnetic resonance imaging test this week indicated a partly torn left knee ligament.
EXTRA POINTS The Jets signed the free agent punter DANIEL POPE Wednesday in case TOM TUPA, who is listed as questionable with a strained hip flexor, and who had a dreadful performance last Sunday, is unable to punt Monday.
