"how laughable" is grammatically correct and can be used in written English.
It is a phrase that is typically used to express disbelief or amusement at something that is ridiculous or absurd. Example: "How laughable that he tried to convince everyone he was a famous celebrity when he couldn't even spell the name correctly."
How laughable that seems now.
But all Epstein does is emphasise how laughable it is to deny Kafka's greatness.
Today's trends show just how laughable it is that there are still people who have a problem with hijab.
The commonest form of multi-tasking among college students is the act of listening to music while trying to assimilate the content of their college textbooks – how laughable.
Did he miss the point where even Jacob Weisberg apologized for his initial praise, admitting that I reacted too quickly and didn't sort out just how laughable Ryan's long-term spending projections were.
I know which pizza will disappoint and where you can get a good salad after midnight, and how bad the music is at the annual Communist Festival in the park and how laughable Italian television is, with its scantily dressed morning-show hosts and the weather report delivered by a man in a uniform decorated like a major general's.
It is almost laughable how easy the game can seem for one batsman while utterly challenging for another.
Mr. Tang also owns a restaurant in Philadelphia, where "it's almost laughable how much more lax it is," he said.
It is laughable how far back opponents of the Bush administration will go to make a point ("Alito Memo in '84 Favored Immunity for Top Officials," news article, Dec. 24).
Yet no matter how roguish (and laughable) in the novel, Rooster can't help registering as a larger-than-life hero on screen because the legend who played him, by then a survivor of cancer and countercultural assaults (for the jingoistic "Green Berets"), had played his role for so long.
"It was almost laughable how many horseflies there were," he noted of his experiences in the northern Sodankylä region of Lapland earlier in the summer.
