ぜひぜひ・是非是非zehizehi

1. adverbcertainly; by all means

• Synonym是非ともぜひともNeutralMore formal and solemn than 「ぜひぜひ」; used in polite requests like 「ぜひともご参加ください」.
• Synonym是非ぜひNeutralThe everyday, most common choice, as in 「ぜひ来てください」; doubling it to 「ぜひぜひ」 simply adds warmth and enthusiasm.
• Synonym何卒なにとぞFormalFormal written language for earnest pleas, as in 「何卒よろしくお願いします」; the focus is on requesting rather than inviting.
• SynonymどうしてもNeutralAdds the sense of 'no matter what'; with a negative, as in 「どうしても無理」, it means something simply cannot be done.
• SynonymどうぞNeutralA plain 'please' for inviting or urging the listener to do something, as in 「どうぞお入りください」.
• Related何が何でもなにがなんでもNeutralBlunter and more forceful, stressing sheer determination to get something done whatever it takes.
• Related理が非でもりがひでもWrittenA written idiom meaning 'right or wrong'; stresses forcing something through no matter whether it is right.
• Related雨が降ろうと槍が降ろうとあめがふろうとやりがふろうとNeutralA proverbial, exaggerated way to stress resolve: you will see it through even if rain or spears fall.

To warmly invite someone to 'definitely come', say 「ぜひぜひ」 — colloquial and friendly. For everyday use pick 「ぜひ」, for formal settings 「ぜひとも」, and for business pleas 「何卒」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. ぜひともそうしてほしい、という強つよい願ねがいや勧すすめを表あらわす。