The phrase "reverse idea" is correct and usable in written English.
It can be used when discussing a concept or thought that is the opposite or contrary to another idea.
Example: "The reverse idea of the original theory suggests that instead of causing harm, the action may actually lead to positive outcomes."
Alternatives: "opposite concept" or "contrary notion".
The trend now is not so much to reverse that idea, but to present both on equal footing.
But we must not reverse the idea of historical necessity and conclude that the current situation is eternal.
As curator of Reporting From The Front, I want to reverse the idea that the Biennale only deals with issues that are of interest to other architects.
The budget is a chance to reverse the idea that Labour never faces down excessive wealth nor makes it pay what it owes in tax.
We utilise QoS prediction techniques here, but rather than bottom-up predicting QoS from monitored infrastructure metrics [5 7], we reverse the idea, resulting in a novel technique for pattern-based resource configuration.
Namely, if we undertake the initiative -- on a collective or even on an individual basis - to help reverse the idea that prevails for Greece in international decision making centers, we will be offering a service, both to Greece and to the world.
Guggenheim and Berlanti -- who, along with fellow executive producer Andrew Kreisberg, form the show's brain trust -- said that over the course of the first half of the season, they realized that, to an extent, they had to reverse their ideas about how Oliver would takes steps along that road to mature heroism.
But more grammar schools reverses the idea that underpins choice: that pupils are diverse so we need a diverse range of schools.
Some watchmakers have reversed the idea, with watches that incorporate classic tattoo designs, like the anchor tattoo long associated with sailors and, of course, Popeye.
