Synonyms: periodic, occasional
Definition: recurring or reappearing from time to time
Usage: periodic feelings of anxiety
Similar words: sporadic
Definition: recurring in scattered and irregular or unpredictable instances
Usage: a city subjected to sporadic bombing raids
Synonyms: occasional
Definition: occurring from time to time
Usage: took an occasional glass of wine
Similar words: infrequent
Definition: not frequent; not occurring regularly or at short intervals
Usage: infrequent outbursts of temper
Synonyms: episodic, occasional
Definition: occurring or appearing at usually irregular intervals
Usage: episodic in his affections; occasional headaches
Similar words: unpredictable
Definition: not capable of being foretold
Synonyms: occasional, casual
Definition: occurring from time to time
Usage: casual employment; a casual correspondence with a former teacher; an occasional worker
Similar words: irregular
Definition: contrary to rule or accepted order or general practice
Usage: irregular hiring practices