Wiktionary
semiregular
a. Somewhat regular; occasional
Usage examples of "semiregular".
I probably have the busiest schedule of anyone in the club, what with my ballet classes and a semiregular sitting job.
The funny thing was, while Willow and Xander had gleefully formed the We Hate Cordelia Chase Fan Club—they even held semiregular meetings—Jesse had always had the hots for her, right up until the moment he died.
But in her one last semiregular gig, Sunday nights at the Kingsborough Hotel, she played a dusty, romantic, out-of-date jazz.