The phrase "while unsure" is grammatically correct and can be used in written English.
It is typically used to indicate a state of uncertainty or hesitation while doing something. Example: While unsure of her decision, she continued to study for the test. In this sentence, "while unsure" shows that the person is uncertain or hesitant about their decision, but they are still taking the action of studying for the test.
Intelligence officials, while unsure — or unwilling to talk — about Mugniyah's day-to-day operations, believe that he is in charge of Hezbollah's worldwide network of cells.
Beyond the galleries, the Barnes's staff members, while unsure about their next budget projections, enjoy benefits by the wallful in offices vibrant with Daumier and Klee, Titian and Courbet, Sloan and Delacroix.
But Alastair Cook, who is approaching his 10,000 Test run landmark with the caution, shall we say, of a fellow wanting to get rid of a wasp nest in his shed while unsure if it is an old one, made only 15 of the 20 he needed to surpass it, and Nick Compton, whose place is under considerable scrutiny, only nine.
So, while unsure of my -- our -- ability to positively impact such challenging issues, I met with nonprofit leaders in California to research state debt, revenue and public education.
The Safety Board believes that the flight crew's failure to take such precautions and the decision to attempt takeoff while unsure of wing cleanliness led to this accident and is a cause of it.
In 2012, Tenille moved to Georgia and while unsure of what she would do for work, Tenille was given Adobe software and was inspired to teach herself graphic design.
Without heroin and cocaine she felt unmoored, and for a while was unsure if she would ever take a good photograph again.
This is a very cool way of working.' But after a while I was unsure how best to use my time.
Many of us worry about this, while being unsure about facts in an area where they are notoriously hard to come by.
In the 1930s, while still unsure of his sexuality, Tippett had considered marriage with Francesca Allinson, who had expressed the wish that they should have children together.
Maybe every once in a while if I'm unsure of a move I might feel a little bit, but not like trembling all over or anything".
