The phrase 'laxity of' is correct and usable in written English.
It is typically used when discussing a lack of strictness or an attitude of leniency. For example, you might say, "The teacher's laxity of rules often resulted in rowdy classrooms."
As chief whip he was intolerant of sexual laxity of any kind.
"There are a lot of misconceptions" about laxity of U.S. privacy laws, she said.
Still, we both benefited from the pre-9/11 laxity of prison authorities in standing guard over religious publications.
With proud wrath, she denounced the laxity of the productions of Balanchine's ballets that N.Y.C.B. gave in the nineties.
The most obvious culprit was the extraordinary laxity of America's mortgage-underwriting standards in the later stages of the boom.
Lewis's examination of the moral laxity of humans (sin is just a bonus) is consistently pointed and amusing.
"BCCI was born of a combination of international competition by laxity of regulation and banking secrecy laws," he wrote.
A firm can move its headquarters to Dublin and then, because of the extreme laxity of regulation, reincorporate itself in, say, Jersey or Liechtenstein.
Feinstein has long been criticized by privacy advocates for a perceived laxity of oversight of intelligence activities and deference to intelligence officials.
But the government has also come in from strong criticism for the laxity of the dams' inspection regime and Brazil's weak environmental legislation.
Underdressed tourists are reported to have been attacked outside mosques.The moral and sartorial laxity of tourists threatens, like everything else in Zanzibar, to become a political issue.
