Neuter (/nju:tə/) is a grammatical gender used in English and other related languages.
In English, neuter nouns are defined by their lack of personal agency. Consequently, they have to be third person, as both the first person and second person are agential.
Typical neuter nouns include pretty much all abstract nouns, and many concrete nouns. Very common neuter nouns include "time", "year", "way", "day", "thing", "world" and "life". The majority of English language nouns, counted by lemma, are neuter.
The third person neuter singular pronouns are "it", "its" and "itself". For plurals, the common gender "they" pronouns can be used, "they", "them", "their", "theirs" and "themselves".
Sometimes the neuter gender is used for animals and babies; but other times they assigned agency.
We can use the wh- words "what" and "which" to refer to neuter nouns, as long as the thing being referred to isn't a time point (when), a way (how), a place (where) or a reason (why).
Don't confuse neuter with dual gender; dual nouns express agency.