Definition of "crypto"

Martin of course is far too dishonest to be outright a crypto or fellow-traveller, but his main influence is pro-Russian and is certainly intended to be so, and I feel reasonably sure he would quislingise in the case of a Russian occupation, if he had not managed to get away on the last plane.

2016, George Orwell, Peter Davison, George Orwell: A Life in Letters

The CIA is also very into crypto (which makes sense, as they are the home of spy versus spy), […]

2004, Chey Cobb, Cryptography For Dummies, page 20

Nigeria—the world's second-largest Bitcoin market after the United States—has banned the trading of cryptocurrencies. It's triggered anger among Nigerians who see cryptos as a safe haven in a battered economy.

2021 February 12, Fred Muvunyi, “Nigeria's cryptocurrency crackdown causes confusion”, in Deutsche Welle News‎, Deutsche Welle, archived from the original on 2021-02-13, World

Some Turks have turned to crypto as a way to protect their savings from skyrocketing inflation and the weakening of its currency, the lira.

2021 April 26, Ryan Browne, “A second bitcoin exchange collapses in Turkey amid crackdown on cryptocurrencies”, in CNBC‎, retrieved 2021-04-26

But to state and federal regulators and some members of Congress, the entry of crypto into banking is cause for alarm.

2021 September 5, Eric Lipton, Ephrat Livni, “Crypto’s Rapid Move Into Banking Elicits Alarm in Washington”, in The New York Times‎