The phrase "a feasible idea" is correct and usable in written English.
You can use it when discussing the practicality or viability of a suggestion or plan.
Example: "After reviewing the proposal, we concluded that it was indeed a feasible idea for our project."
Alternatives: "a practical suggestion" or "a workable concept."
"It's a feasible idea and should be given consideration," he told The New York Times at the time.
And no, it is not a good, or even a feasible, idea – at least, if taken seriously.
Mr. Deitch's tenure as director has so far been a disappointment even to the people who thought it was a feasible idea in the first place, of whom I was one.
Essentially, all you need to get started is a feasible idea.
It seemed like a feasible idea, even though it's got a heightened sense of reality.
The basic income experiment in Finland shows that partial basic income is a feasible idea with a pragmatic goal to increase employment and the incentive to work outside of the traditional labor market.
"But that's just not a very feasible idea today".
We propose an experimentally feasible idea for the delayed-choice quantum eraser, having adjustable path distinguishability/fringe visibility.
So entrepreneur and conference organizer Francisco Dao has a more immediately feasible idea: Rent out a hotel in Monterey, sign up for the TED live feed, get a bunch of huge screen TVs and bean bags and invite fifty of the most interesting people he can find to virtually attend the conference together.
In short, it was never a good or objectively feasible idea to entrust to a foreigner the challenge of meeting the requirements of a massive modern sports project with the structural, aesthetic, and, yes, psychological, needs for a replacement for the iconic and ultra-Japanese existing Japanese national stadium.
This study provided an easy and feasible idea for the design and preparation of pH-sensitive nano delivery system.
