副詞・程度N5
ぜひ
definitely / by all means
Structure
ぜひ + V-たい / ぜひ + V-てください
Explanation
Expresses strong desire or invitation. ぜひ+〜たい/〜てください = definitely want to/please do. More about speaker's wish than きっと.
Examples
日本にぜひ行きたいです。
I definitely want to go to Japan.
ぜひ遊びに来てください。
Please do come visit.
Note
ぜひ=speaker's strong wish/invitation; きっと=objective conjecture (must be). ぜひとも=even more earnest.