是非で始まる言葉

ぜひ【是非】

1〔善し悪し〕right and [or] wrong当時まだ是非もわきまえぬ子供だったI was then too young to know [tell] right from wrong....

ぜひない【是非（も）ない】

彼にしつこく頼まれて是非もなく金を貸したSince he was so persistent in asking, I had no choice but to lend him money.