"express hesitation" is correct and usable in written English.
You can use it when you are hesitant about something and want to convey that to another person. Example: I would like to accept the job offer, but I'm expressing hesitation because I'm unsure about the salary.
David Cooper, an economic analyst the Economic Policy Institute, said he applauds the Oregon legislature for its creative tiered approach but did express hesitation.
One evening in this restaurant we overheard a party at another table express hesitation about drinking Italian wines and the owner reassured them, correctly, that the wines on wine lists in this country were not involved in the recent tainted-wine scandal.
Despite the many tangible and intangible benefits of enrichment experiences like internships, I often hear fellow graduate students express hesitation to pursue them.
Some parents express hesitation to have any kind of public displays of affection in front of their children.
We at FreeThe Nipple have heard from countless women who express hesitation and fear when faced with the need to breastfeed in public.
If there are white evangelicals who now express hesitation or discomfort with some of the president's other policies or with his unsavory character, it doesn't change the fact that those same voters were crucial to his election.
But Mr. Trump had expressed hesitation about removing him from his post in Germany.
According to The Fix's latest numbers, 92 representatives have expressed hesitation but not complete opposition.
Some residents have expressed hesitation about returning while the military remains.
But she didn't want me to turn on my recorder, and, from the moment we sat down, she expressed hesitation about doing the Profile at all.
Shoppers expressed hesitation about the veracity of virtual reality and were concerned it could be manipulated to show an overly idealized version of a home.
