1) 溯及そきゅう #124,784 Inflections of 溯及 Class Suru verb Stem Inflected ending ✕ Link copied! そきゅう [0] Meaning Shirabe Noun Suru verb Intransitive verb retroactivity; retroaction; being retroactive (to) Kanji 溯 ソ go upstream, retrace the past 及 キュウ reach out, exert, exercise Forms 遡及#124,784遡及そきゅうさっきゅう#220,910さっきゅうそきゅうそきゅう溯及(rarely used kanji form)溯及そきゅう
