一笑に付する いっしょうにふする Meanings Expression, する verb to laugh (something) off; to dismiss with a laugh; to pooh-pooh See also: 一笑に付す (いっしょうにふす). Kanji 一 one. Read as イチ. 笑 laugh. Read as ショウ. 付 attach Jinuma: Japanese Dictionary · Word lists