Occasional
Part of speech: adjective
Definition: limited to certain occasions, oft. used in the sense of "not very often"
Example sentence: I will never have the willpower to completely swear off pizza or a good summer sale, but I'm working on realizing the difference between the occasional craving and the compulsion to mindlessly consume as a feeble means of self-medication.
Episodic
Part of speech: adjective
Definition: relating to an episodesporadic, happening infrequently and irregularlymade up a sequence of seemingly unconnected episodes