大賛成だいさんせい Noun English jmdict 1 noun (common) (futsuumeishi) complete agreement 私は減税に大賛成だ。 I'm very much in favor of cutting taxes.
賛成さんせい Common Noun Irregular Intransitive Noun English jmdict 1 noun (common) (futsuumeishi) noun or participle which takes the aux. verb suru intransitive verbnouns which may take the genitive case particle 'no' approval;agreement;support;favour;favor Antonym: 反対 (はんたい) 私たちの計画に賛成してくれますか。 Are you agreeable to our plan?
Shirabe