What is the meaning of Anon?

Straight away; at once.

Soon; in a little while.

At another time; then; again.

An anonymous person, traditionally especially a published author but now especially an internet rando.

An anonymous poster (person who contributes a note, message, etc). A participant in an online site, such as a forum or an imageboard, without an account, or who posts without identifying themselves, or hidden behind a pseudonym.

A work with an unknown author.

A work without a title.

Short for anonymous.

accusative singular of ano

genitive singular of ano

first-person singular present indicative of anoa

anon (straight away, at once)

continually, on and on

all the way

Source: wiktionary.org