I tend to frown the use of abbreviations in this day and age of IntelliSense, but "utils" is one of those abbreviations that I consider common enough in programming to be fine to use, and I see it very commonly used in existing code bases. It's like the "init" abbreviation, which is used all over the place in the Linux kernel. Init this, init that. Purists will still frown the use of abbreviations in the comfort of Visual Studio, but I guess I can't blame a bunch of C programmers remote-debugging a kernel in terminal-mode emacs with a 80-character limit if they have no patience for very long names.

As to whether you should have a util folder instead of having more descriptive names, that's a totally different matter.