ep·i·sodi·cal·ly /-ɪk(ə)lɪ/ 副詞
Ep·i·so·dic Ep·i·so·dic·al a. Of or pertaining to an episode; adventitious. -- Ep*i*so*dic*al*ly, adv.
Such a figure as Jacob Brattle, purely episodical though it be, is an excellent English portrait. --H. James.
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episodically
adv : in an episodic manner