なにとぞ
なにとぞ · nanitozo · JLPT N1 · adverb
by all means
nani (what) + to + zo (emphatic) = whatever it takes, please
Literally 'by whatever means', built from 何 (nani, what) plus the emphatic particle ぞ (zo). Use it to earnestly request something or to insist 'by all means'.