The phrase "a guise for" is correct and usable in written English.
It can be used to indicate that something is a deceptive appearance or pretense for something else, often implying that the true nature is hidden.
Example: "The charity event was merely a guise for their ulterior motives in gaining political influence."
Alternatives: "a cover for" or "a facade for".
It's a guise for all seasons.
They said Libya had at least temporarily eclipsed some of the divisive debates of the past about whether humanitarian intervention could be viewed as a guise for imperialism.
Many assume that Islamic charities are "merely a guise for promoting terrorism", writes Sara Roy, a Middle East scholar at Harvard.
Other anti-Islamists prefer "Sufi" Muslims; which is a guise for apolitical Muslim, notwithstanding how political and radical Sufi Muslims have been historically.
Bankers and investors see the attacks as a guise for the real target: the linking of the Argentine currency to the dollar.
"Spies Against Armageddon" offers a broad overview of a widely reported Israeli campaign to sabotage Iran's nuclear program, which Israeli authorities contend is a guise for developing nuclear weapons, an accusation the Iranians strenuously deny.
This week I added fire to a quantity of cooked fregola in the form of harissa paste and scarlet tomatoes and later, in a second guise for a garden lunch, the crunch of cucumber both refreshingly raw and lip-stingingly quick-pickled.
It is difficult to be sure how many of them were in fact social rebels or whether this was merely a guise adopted for literary purposes.
Bresnan was almost schoolmasterly (a rare guise for him) as he dismissed this topic.
Yet since the black and white days, when villains could be spotted as they rode through Monument Valley because they wore the darker hats, the form has regularly resurfaced in a new guise for each generation.
