JLPT N1
是非とも
ぜひとも
by all means (with sense of not taking no for an answer)
Example Sentence
是非ともな態度で接することが大切だ。
It is important to interact with a by all means (with sense of not taking no for an answer) attitude.
ぜひとも
by all means (with sense of not taking no for an answer)