The phrase "a sort of harmless" is correct and usable in written English.
It can be used to describe something that is generally considered to be innocuous or not harmful in nature.
Example: "The prank was a sort of harmless joke that everyone could laugh about."
Alternatives: "somewhat innocuous" or "kind of benign".
Time has lent them a sort of harmless homogeneity that they did not have at the time they were made.
If he broke into the mainstream five years ago he would have been clumped in with the Keith Lemon crowd, a sort of harmless nod-nod, wink-wink "ooh-me-gooch-hurts" ITV2 panel show staple.
We live in a world where a woman ended her 20-year relationship with the Berlin Wall to marry the Eiffel Tower, and we view her as a sort of novelty fetishist, a sort of harmless iron frotter.
Their whole meaning and virtue is in their unredeemed lowness, not only in the sense of obscenity, but lowness of outlook in every direction whatever… Like the music halls, they are a sort of saturnalia, a harmless rebellion against virtue".
Unfortunately, in the United States, where even serial killers are considered innocent until proved otherwise, all sorts of harmless pleasures are routinely described as guilty.
This yearning for universal mathematical laws to govern the behaviour of human beings has burdened the west with all sorts of harmless and less harmless nonsense, from phrenology to economics.
At least as important, he is at once self-consciously outrageous and ultimately harmless, a sort of transgalactic RuPaul.
A useful thing, nostalgia, pleasant to contemplate, harmless, a sort of steadying view of your own life set out like a stage set.
Juli Weiner: From what we've seen of Marnie, she seems sort of harmless and impotent post-breakup.
Gail: I'm ignoring that because I'm already thinking of clever repartee for our script about the return of Mitt Romney, who would be like the Incredible Hulk, sort of harmless until someone reminds him he lost the election, and then, watch out!
