'swift thinking' is correct and can be used in written English.
You can use it to describe someone's intelligence or thought process that is quick or efficient. For example, "She had to come up with a solution to the problem quickly, but her swift thinking allowed her to find the best solution."
Swift, thinking the conversation was aimed at her, tried to stand up for herself, even inviting Minaj on stage with her should she win.
Swift, thinking the missive was about her "Bad Blood" video that stars a gang of her super-thin, famous girlfriends, fired back on Twitter: "I've done nothing but love & support you.
Swift thinks are beautiful.
Swift-thinking NATO officials quickly shifted to the alliance's forgotten second official language, French.
The assessment, compiled by consulting firms hired by the airport department, credited a swift-thinking airport worker for using his cellphone to report details of the shooting to airport police as well as officers from the agency for responding rapidly and limiting the carnage.
Instead of relying on a few experts selected by leading publications, they advocate using the Internet to expose scholarly thinking to the swift collective judgment of a much broader interested audience.
Some developers are even thinking about using Swift for server-side development.
The region was an American underbelly in the semi-tropical heat; the manners were softer, the violence swifter, the commerce slower, the thinking narrower, the past closer.
Having survived no end of swift, quick-thinking attacks, Hereford stirringly raised the siege as the gale and the crowd and a low wintry sun got behind them in the second-half.
Correction: Japan's GDP Reprints Related items India's new government: Coming down to earthMay 27th 2004The swiftest riposte† to this line of thinking comes from Arvind Panagariya, an economist at the University of Columbia.
The fact that he can kill with such swift efficiency – and do it entirely without thinking.
