欠落けつらく Noun Irregular Intransitive English jmdict 1 noun (common) (futsuumeishi) noun or participle which takes the aux. verb suru intransitive verb lack;absence;omission 男女関係における嫉妬はしばしば信頼の欠落によってもたらされる。 Jealousy in a relationship is often brought about by a lack of trust.