in fits
• highly amused.
• "he had us all in fits"
in fits and starts
• with irregular bursts of activity.
• "the economy was recovering in fits and starts"
Similar:
spasmodically,
intermittently,
sporadically,
erratically,
irregularly,
interruptedly,
fitfully,
haphazardly,
on and off,
off and on,
now and then,
now and again,
