on and off

Like many rock stars of the time, Ramone lived there on-and-off for a time; he even detoxed from heroin there once.

He was an on-and-off drug addict and sometimes a criminal; he was a collector of switchblades and vintage Disney T-shirts.

These are known as ordinary grazing permits, on-and-off permits, private land permits, and crossing permits.

Not a question, so far, about his rapid on-and-off engagement, for which mercy he was duly grateful.