pronoun / adverb
none
NUN/nʌn/
Not any at all.
The carton has six compartments, but none contains an egg.

Etymology
Literally “not one,” none denies even a single member of the group in question. That same combination already meant “not any” or “no person” in Old English.
In context
There was no wireless call. Though she was fitted to send one, and every operator along the coast was later asked, and none had heard a whisper.