OXFORD DICTIONARY
Recur, v.intr. (recurred, recurring)
1 occur again; be repeated.
2 (of a thought, idea, etc.) come back to one's mind.
3 (foll. by to) go back in thought or speech.
recurring decimal a decimal fraction in which the same figures are repeated indefinitely.
L recurrere recurs- (as RE-, currere run)
THESAURUS
Recur
alternate, be here again, circle, come again, come and go, come around, come back, come round, come round again, come up again, continue, cycle, echo, go back, intermit, keep coming, occur often, oscillate, pulsate, pulse, react, reappear, reoccur, repeat, resound, resume, return, return to mind, reverberate, revert, revolve, roll around, rotate, turn, undulate, vibrate, wheel, wheel around
ROGET THESAURUS
Recur
Repetition
VB
repeat, iterate, reiterate, reproduce, echo, reecho, drum, harp upon, battologize, hammer, redouble, recur, revert, return, reappear, recurse, renew, rehearse, do over again, say over again, ring the changes on, harp on the same string, din in the ear, drum in the ear, conjugate in all its moods tenses and inflexions, begin again, go over the same ground, go the same round, never hear the last of, resume, return to, recapitulate, reword.
Frequency
VB
recur, do nothing but, keep, keep on.