Intermittently

The fluorescent light was faulty and flickered on and off intermittently.

Sami was checking his phone intermittently.

Filby became pensive. “Clearly,” the Time Traveller proceeded, “any real body must have extension in four directions: it must have Length, Breadth, Thickness, and—Duration. But through a natural infirmity of the flesh, which I will explain to you in a moment, we incline to overlook this fact. There are really four dimensions, three which we call the three planes of Space, and a fourth, Time. There is, however, a tendency to draw an unreal distinction between the former three dimensions and the latter, because it happens that our consciousness moves intermittently in one direction along the latter from the beginning to the end of our lives.”

It was snowing intermittently.

The Hariri-Aoun agreement has shown that Hezbollah can bring the national political system to a halt. This happened in the past several years, and it worsened conditions in sectors such as foreign debt, electricity output, rubbish collection, water delivery, and other essential services, to the discomfort of the majority of Lebanese who have spoken out intermittently against the oligarchy of sectarian leaders who rule the country.