The phrase "highly uncomfortable" is correct and usable in written English.
This phrase is typically used to describe a feeling of extreme uneasiness or distress. For example: The close quarters of the plane ride left me feeling highly uncomfortable.
It felt highly uncomfortable at the time.
In between official rail strikes things have been highly uncomfortable.
For crew members remaining aboard the Cole, conditions appeared to be highly uncomfortable.
This looks like a highly uncomfortable collision between the two big powers.
If experience truly "ought to" count, then Mr. Ford and Mr. Dole should be highly uncomfortable with their party's slate.
The result was cognitive dissonance: a highly uncomfortable state from which human beings will do almost anything to escape.
At the Mission's Convento Museum, you can peer into Father Serra's spartan living quarters — a table, chair and a highly uncomfortable-looking wooden bed — and check out his book collection, identified as "California's first library".
Fox said that while filming her highly anticipated kissing scene with Seyfried that Seyfried was "extremely uncomfortable" but that she herself was not.
While I am deeply grateful and supportive of the NHS, my father, who died in 2006, did not receive the standard of care I wished for him from his long-term GP, or while in hospital, where he died from cancer highly medicated and uncomfortable having had multiple inaccurate diagnoses until very late in the day.
Unfortunately, H2S is highly toxic and uncomfortable to work with.
This reduction method allows to obtain Ln2O2S without using H2S which is highly toxic and uncomfortable gas.
