The phrase "a year of inactivity" is correct and usable in written English.
You can use it to describe a period of time, specifically one year, during which no activity or progress has occurred.
Example: "After a year of inactivity, the project was finally revived with new funding and a fresh team."
Alternatives: "a year of dormancy" or "a year of stagnation."
After almost a year of inactivity, this kitchen needs time to regain its stride.
"Lieber is a great competitor, but you don't know what you're going to get coming off a year of inactivity.
For example, assume a service fee is imposed on a general-use prepaid card on January 1, following a year of inactivity.
Greg Bird will have to show that he has shaken off a year of inactivity owing to a shoulder operation if he is to win the first-base job.
If, however, the dormancy fee could be imposed on January 1, following a year of inactivity, and the consumer makes a balance inquiry on the same date, the person assessing the fees may choose whether to impose the dormancy fee or the balance inquiry fee on January 1.
For example, if a dormancy fee is imposed on January 1, following a year of inactivity, and a consumer makes a balance inquiry on January 15, a balance inquiry fee may not be imposed at that time because a dormancy fee was already imposed earlier that month and a balance inquiry fee is a type of service fee.
His big-league resume consists of 140 games and 508 plate appearances spread over two seasons separated by a year of virtual inactivity.
After a full year of inactivity and four months of rebuilding in the gym, he has made one of the great recoveries in the history of sport.
Despite his year of inactivity O'Sullivan has retained a world ranking of 13, and the four-time world champion said he would not have returned had he been forced to qualify for a tournament where only the world's top-16 players are granted automatic entry: "I thought I'm still too good a player to have to qualify.
After one year of inactivity, accounts were locked, and users had to call a help desk to reinstate them.
Mr. Gray and his producer, Karin Chien, had been developing the film for nearly three years at that point, and another year of inactivity was too depressing to contemplate.
