The phrase "a bit stumped" is correct and usable in written English.
It can be used when expressing mild confusion or uncertainty about a situation or problem.
Example: "I was a bit stumped by the complex math problem and needed some help to solve it."
Alternatives: "a little confused" or "somewhat puzzled".
Ancram is a bit stumped by this.
Beyond, "Er, looks OK to me, " I'm a bit stumped.
One of my very favorites was ALIEN and I got a bit stumped by LOBAR, inexcusably, as it's evergreen crossword fill fodder.
I got a bit stumped with my dark net story, put it on hold and became more interested in the wonderful world of cryptocurrencies as the value of bitcoins soared over the next few months (the 1.5 bitcoins I'd bought for £20 were worth £300 at one point this spring).
Apart from the Bergs, Stravinskys, Schoenbergs & Bridges one is a bit stumped for names, isn't one?" – adding, as an afterthought: "Shostakovitch – perhaps – possibly".
What's in Ethiopia?" When I mention that I've spent the past ten months living and working in this mountainous country in the Horn of Africa, most people are a bit stumped.
She stared at me a moment, stumped.
On good days you feel like a tree that bears wonderful fruit; on bad days, you can feel a bit like the stump that people sit on".
When he stepped down as Starbucks executive chair in June, Schultz "ignited suspicions about potential political ambitions, including a possible 2020 bid for the White House speculation fed by his going-away message, which sounded quite a bit like a stump speech," per Vox.
You can also smudge your pastels with a bit of paper ("stump") instead of using your finger, as it will help keep your work cleaner and let you not have to wash your hands every time you smudge (which is very annoying if you are not working right next to a sink).
OscarWatch has a funny bit about stumping on behalf of various films, while Caryn James of The Times explains why smart movies often don't finish in the money.
