'decent understanding' is correct and usable in written English.
You can use it to indicate that someone has a solid but not perfect comprehension of a subject. For example, "He displayed a decent understanding of the material, although he still had some gaps in his knowledge."
"I think we've got a decent understanding.
He immediately started to get down with a pretty decent understanding of the foundations of popping.
"I had a fairly decent understanding of the law," Carpenter said.
Britain needs a highly skilled and highly motivated workforce, with good professional skills, better soft skills and a decent understanding of issues such as personal finance.
Finally, what of our duty to ensure that young people leave school with a decent understanding of how our political system works?
Without a decent understanding and education on the topic, will the next generation of teenagers be consigned to great masturbation and confusing, harmful sex? *In order to protect the identities of interviewees, no real names have been used.
I am grateful that my son sees and does a decent job understanding gender inequality.
In fact, I thought Taylor's underwritten part was actually pretty decent and understanding, given that the entire world was telling her that Caitlin was badmouthing her dead daughter over guilt about revealing the hiding place of schoolmates.
Hopefully, she says, the students will learn enough that when they are deployed overseas, they'll have a decent, evidence-based understanding of the cultural attitudes they're working with.
Any decent Muslim cannot live, understanding properly his duties towards his Creator and his fellow Muslims, and yet serve as a U.S. soldier.
"It is a means not just of learning but of earning a decent living, transcending circumstance, understanding how to be part of a community and venturing into new worlds.
