Answer: sporadic

AnswerCrossword Clue
SPORADICOff and on
SPORADICOn-again, off-again
SPORADICOccurring irregularly
SPORADICNot steady
SPORADICScattered
SPORADICNow and again.
SPORADICOccasional
SPORADICOn and off
SPORADICIsolated
SPORADICNot regular
SPORADICOn-again-off-again
SPORADICIrregular
sporadicoccasional; scattered
sporadicoccurring at irregular intervals