'kind of endearing' is correct, and can be used in written English.
You can use the phrase when something is affectionately or charmingly amusing or quaint. For example: "His simplicity was kind of endearing."
They're "spiritual sheepdogs," "servants of the bloodline," and their behavior is goofy and kind of endearing.
It's not a very convincing argument, but the juxtaposition of Mr. Bell and Amazing Ali, who is 3-foot-5, is kind of endearing.
Boyd has a sneaking fondness for bad behavior, which he has indulged since his first novel, "A Good Man in Africa," a Wodehousian farce about a deceitful, lecherous, incompetent, spiteful postcolonial diplomat whose abject indifference to morality and even, at times, to decorum becomes kind of endearing.
I had seen kits advertised before, but this is the first time I've seen on in real life and, oddly enough, it's kind of endearing.
They're handy when you've had a break-in, they do their best to stop the bad guys and a lot of them seem to have that complete lack of self-awareness that can sometimes be kind of endearing.
He described his experience in the audition, saying "I was just going in for another audition, and I had no idea what was in store there in terms of the remarkable visual wit and really the kind of endearing child-like humanity in the show.
He's the kind of goofy, endearing, woke dude a lot of us could see ourselves being friends with.
/ Her style is full of endearing hesitations.
I don't know if this infuriating of endearing.
Steve Jobs' handling of that flaw was the opposite of endearing.
We have our fair share of endearing qualities.
