即興
Common
Noun
1
noun (common) (futsuumeishi)
improvisation
結婚式のスピーチでくよくよすることはない。いざとなったら即興でもうまくいくもんだよ。
Don't worry about giving a speech at the wedding; you can just wing it when you get there.
2
nouns which may take the genitive case particle 'no'
improvised;impromptu;extempore;ad-lib;off-the-cuff