"uncomfortable fact" is correct and can be used in written English.
Example sentence: Sarah found it an uncomfortable fact that her parents disagreed with her decision.
IN ITS understandable rage for justice, America may be tempted to overlook one uncomfortable fact.
But they are also awakening to an uncomfortable fact: a truncated summer on speed dial.
That is a sad and uncomfortable fact, but it's a fact that has to be accepted.
Jean-Claude Juncker, the president of the EU commission, stated an uncomfortable fact.
Well, the uncomfortable fact is that Cheney played an essential role in promoting the surge.
For those who argue 'something must be done' about Isis, that failure of Western action is an uncomfortable fact.
An uncomfortable fact here too is that Poland may need Russia now more than in recent years.
When this uncomfortable fact came to light, Affleck asked the show's producers to conceal his family's links to slavery.
At the heart of this "market" lies an uncomfortable fact: Uganda has a huge child abandonment problem.
Elsewhere, Sikhs reflected on the uncomfortable fact that because their appearance sets them apart, they are sometimes mistakenly singled out as targets.
The uncomfortable fact is that for all her singularity, Dr. Bishop also provides an index to the evolved status of women in 21st-century America.
