The phrase "an unwise one" is correct and usable in written English.
It can be used to describe a decision or choice that is not considered wise or prudent.
Example: "Choosing to invest all his savings in a single stock was an unwise one, as it left him vulnerable to market fluctuations."
Alternatives: "a foolish choice" or "a poor decision".
That seems a wise strategy if Rubio is very near the front of the field, and an unwise one if he is not.
It would like to scrap ID cards and Trident and bring back the troops from an "illegal" war in Iraq and an "unwise" one in Afghanistan.
Their decision to take out Costa was an unwise one: Lucho, the one who shot her, takes his life shortly after by leaping from the high-rise window, a decision which you can't help but think Victor – who has history in making people do things against their will – had a hand in.
There are no losers yet in the Peyton Manning derby, with him reportedly still to meet with Miami and now Tennessee, where owner Bud Adams has made a splashy pitch — and an unwise one, according to Doug Farrar of Yahoo.com — for Manning to sign there.
The enduring image of the Thomas-era Knicks is the defender making a futile rush at the opponent who has put up an unguarded 3-point shot from the corner, followed by an unwise one-on-one offensive move.
Wilful, impulsive and unwise, one of them gets trapped over here every now and then, imprisoned by a spell in a bottle or a lamp.
And that may be an unwise posture on their part.
"It seems to us not only an unwise policy but an illegal one," said Brian Siebel, a lawyer in Washington for the Brady Campaign to Prevent Gun Violence.
"He's got to do something for them other than to simply say, 'Oh, I talked to the president-elect and told him it would be an unwise idea,'" Rep. Luis Gutierrez (D-Ill)., one of the House's most strident advocates for immigration reform, told HuffPost last month.
At least one of the listed responses (use big words) could be considered an unwise strategy choice for assisting communication between health professionals and PWA; although this was not a common phenomenon.
From strictly a cost perspective, we would be paying more and getting less, and one does not need to have an economics degree to realize that this is an unwise investment.
