Nothing, nobody
Question word + mo + a negative verb = nothing, no one, nowhere.
nanimo
nothing (with negative)
何も なにも
With a negative verb means 'nothing, not anything' (nanimo nai, nanimo tabenakatta).
nanimo nai yo.
There's nothing.
何もないよ。
nanimo arimasen yo.
There's nothing.
何もありませんよ。
The emphatic casual form is nan ni mo (nan ni mo nai).
Learn alongside: daremo, doko ni moLearn first: nani
daremo
nobody (with negative)
誰も だれも
With a negative verb means 'no one' (daremo inai), and splits around a particle (dare ni mo iwanai = won't tell anyone).
daremo inai yo.
There's nobody here.
誰もいないよ。
daremo imasen yo.
There's nobody here.
誰もいませんよ。
daremo ga + a positive verb means 'everyone' but sounds formal (daremo ga shitteru); casually say minna shitteru.
Learn alongside: nanimo, doko ni moLearn first: dare, nanimo
doko ni mo
nowhere (with negative)
どこにも
With a negative verb means 'nowhere, not anywhere' (doko ni mo ikanai), keeping ni or de inside.
doko ni mo nai yo.
It isn't anywhere.
どこにもないよ。
doko ni mo arimasen yo.
It isn't anywhere.
どこにもありませんよ。
dokomo with a positive verb means 'everywhere' (dokomo onaji); casually ni is often dropped with a negative too (dokomo itte nai = haven't been anywhere).