Collocations for inactivity - noun

relative
Her most brilliant work was done during several months of relative inactivity.

physical
economic, political (both esp. BrE)
enforced (esp. BrE), forced (esp. AmE)
It was good to be home again after the enforced/forced inactivity of the hospital bed.

a period of inactivity
The job entailed long periods of inactivity.