Misgiving (noun)

1. An uneasy or uncertain feeling about the future or the outcome of something.
2. A feeling of doubt or mistrust.

Origin:

From middle english misgivyng, from old english misgefēn, equivalent to mis- + gefēn ("meeting, agreement"); see give.

Examples:

1. He had a misgiving about the safety of the bridge before crossing it.
2. She had misgivings about her ability to pass the test.
3. The company had misgivings about the new project and decided not to invest in it.
4. I had a misgiving about the weather and decided to bring an umbrella.
5. He had a misgiving about the honesty of the used car salesman.